The Gohonzon, not Daisaku Ikeda, is the teacher of all Buddhas throughout the Three Existences

The next time a priest or a Gakkai leader deprecates you, insisting that you receive “training” or “guidance” from them or Ikeda, tell them, "The Gohonzon is the teacher of all Buddhas throughout the Three Existences." You may also cite the following:"The Gohonzon (not Daisaku Ikeda) is the teacher of all Buddhas throughout the Three Existences."

“The Buddha, replying to Maitreya’s doubts, said: “Ajita, these bodhisattvas . . . whom you have never seen before in the past—when I had attained supreme perfect enlightenment in this saha world, I converted and guided these bodhisattvas, trained their minds, and caused them to develop a longing for the way.” (Opening of the Eyes)

The Bodhisattvas of the Earth have been trained by the Original Buddha and reminded of his guidance by the venerable Daishonin:

“Now , when the Eternal Buddha was revealed in the essential section of the Lotus Sutra, this world of endurance (Saha-world) became the Eternal Pure Land, indestructible even by the three calamities of conflagration, flooding, and strong winds, which are said to destroy the world. It transcends the four periods of cosmic change: the kalpa of construction, continuance, destruction and emptiness. Sakyamuni Buddha, the Lord-preacher of this pure land, has never died in the past, nor will He be born in the future. He exists forever throughout the past present and future. All those who receive His GUIDANCE are one with this Eternal Buddha.” — The True Object of Devotion for Observing the Mind

“Since Sakyamuni Buddha is eternal and all other Buddhas in the universe are his manifestations, then those great bodhisattvas converted by manifested Buddhas are also disciples of Lord Sakyamuni Buddha. If the “Life Span of the Buddha” chapter had not been expounded, it would be like the sky without the sun and moon, a country without a king, mountains and rivers without gems, or a man without a soul. nevertheless, seemingly knowledgeable men of such provisional schools of Buddhism as Ch’eng-kuan of the Hua-yen, Chia-hsiang of the San-lun, Tz’u-en of the Fa-hsiang, and Kobo of the shingon tried to extol their own canons by stating: “The Lord of the Flower Garland Sutra represents the reward-body (hojin) of the Buddha whereas that of the Lotus Sutra the accomodative body (ojin);” or “the Buddha in the sixteenth chapter of the Lotus is an Illusion; it is the great Sun Buddha who is enlightened.” clouds cover the moon and slanderers hide wise men. When people slander, ordinary yellow rocks appear to be of gold and slanderers seem to be wise. Scholars in this age of decay, blinded by slanderous words, do not see the value of a gold in the “Lifespan of the Buddha” chapter. Even among men of the Tendai school some are fooled into taking a yellow rock for gold. They should know that if Sakyamuni had not been the Eternal Buddha, there could not have been so many who received GUIDANCE from Him. ” — The Opening of the Eyes

Were a priest or SGI leader then to assert that the Eternal Buddha is Original Enlightenment, you may point out the principle of individuation, the personification and behavior of the Master of Teachings Lord Shakyamuni Buddha, the Original Three Bodied Tathagata, stating, “Of what use is your training and guidance? I have been trained by the Eternal Buddha Shakyamuni and Nichiren Daishonin." You may further cite the following passages from the Opening of the Eyes:

“When we come to the essential teaching of the Lotus Sutra, then the belief that Shakyamuni first obtained Buddhahood during his present lifetime is demolished, and the effects of the four teachings are likewise demolished. When the effects of the four teachings are demolished, the causes of the four teachings are likewise demolished. Thus the cause and effect of the Ten Worlds as expounded in the earlier sutras and the theoretical teaching of the Lotus Sutra are wiped out, and the cause and effect of the Ten Worlds in the essential teaching are revealed. This is the doctrine of original cause and original effect. It reveals that the nine worlds are all present in beginningless Buddhahood and that Buddhahood is inherent in the beginningless nine worlds. This is the true mutual possession of the Ten Worlds, the true hundred worlds and thousand factors, the true three thousand realms in a single moment of life.” — The Opening of the Eyes

and

“Answer: The “Expedient Means” chapter in volume one of the Lotus Sutra states, “The Buddhas wish to open the door of Buddha wisdom to all living beings.” This refers to the world of Buddhahood inherent in the nine worlds. The “Life Span” chapter states: “Thus, since I attained Buddhahood, an extremely long period of time has passed. My life span is an immeasurable number of asamkhya kalpas, and during that time I have constantly abided here without ever entering extinction. Good men, originally I practiced the bodhisattva way, and the life span that I acquired then has yet to come to an end but will last twice the number of years that have already passed.” Here the sutra refers to the nine worlds inherent in Buddhahood.” — The True Object of Worship

And finally, to drive home our point, you may cite Nichiren Daishonin in the One Essential Phrase:

“Even though one neither reads nor studies the sutra, chanting the title alone is the source of tremendous good fortune. The sutra teaches that women, evil men, and those in the realms of animals and hell— in fact, all the beings of the Ten Worlds— can attain Buddhahood in their present form. [This is an incomparably greater wonder than] fire being produced by a stone taken from the bottom of a river, or a lantern lighting up a place that has been dark for a hundred, a thousand, or ten thousand years. If even the most ordinary things of this world are such wonders, then how much more wondrous is the power of the Buddhist Law! We ordinary beings are fettered by evil karma, earthly desires, and the sufferings of birth and death. But due to the three inherent potentials of the Buddha nature— innate Buddhahood, the wisdom to perceive it, and the actions to manifest it— we can without doubt reveal the Buddha’s three bodies— the Dharma body, the reward body, and the manifested body. The Great Teacher Dengyo states, “Through the power of the Lotus Sutra of the Wonderful Law they can do so in their present form.” He is referring to the example of the dragon king’s daughter, who achieved Buddhahood in her reptilian form through the power of the Lotus Sutra. Do not doubt this in the least. Please tell your husband that I will explain this in detail when I see him.”

He doesn’t say, “by the power of a living mentor, teacher, or priest.” He says, “through the power of the Lotus Sutra of the Wonderful Law.” Do not be fooled by the charlatans who don’t have even a mustard seed of faith.