Nichiren demolishes SGI and NST Japanese founder worship pseudo-Buddhism. Let's read Nichiren's own words that smash the logic of NST's and SGI's switch from Nichiren's Lotus Sutra Buddhism to Japanese Founder Worship.
"The Kegon and Shingon Schools established Vairocana and the Great Sun Buddha instead of Sakyamuni Buddha as the object of worship respectively. It is like a king's son despising his father while respecting a nameless person who acts as though he were the King of the Dharma." "The Pure Land School considers Amitabha Buddha, who is merely a manifestation of Sakyamuni in the Pure Land to the West, to be the lord of this world and abandons Sakyamuni, who is the real lord of this world. The Zen School, just like a lowly man with little virtue despising his parents, despises the Buddha and His sutras."
"They are all confused about the main object of worship. It is analogous to the situation before the time of the Three Emperors, when people did not know who their fathers were and behaved like beasts and birds. Those Buddhist schools which do not know the "The Life Span of the Buddha" chapter are the same as beasts and birds; they do not know the debt they owe to the Eternal Buddha. Grand Master Miao-le declared; Eternity in the life of the Buddha, who is our parent, has not been revealed in the pre-Lotus sutras. If one does not know the eternity in the life of his father, the Buddha, he is also confused about the Buddha land his father governs. Such a man, no matter how capable he may be, is not at all worthy of a human."
"Grand Master Miao-le was a man of the T'ien-pao Period toward the end of the T'ang China. Having widely read and deeply contemplated canons of the Sanlun (Sanron), Hua-yen (Kegon), Fa-hsiang (Hosso), and Chen-yen (Shingon) Schools, he concluded that those who do not know the Original Buddha revealed in the "The Life Span of the Buddha" chapter are like "beasts and birds", who may be talented but do not know of the land governed by the father.
"No matter how capable he may be" refers to men like Fa-ts'ang and Ch'eng-kuan of the Hua-yen (Kegon) School and Venerable Subhakarasimha (Shan-wu-wei) of the Chen-yen (Shingon) School, who were men of talent but, like children who do not know their father, did not know of the true and eternal Sakyamuni Buddha."