Why SGI and Nichiren Shoshu Gohonzon and members are inhabited by devils

From the "Myoho Mandara Kuyo Ji" by Nichiren Daishonin to a female believer: 

"I have written the Myoho Renge Kyo Gohonzon and consecrated it for you."

Therefore, the SGI argument that "Nichiren never taught the Eye Opening Ceremony for Gohonzon, so it is unnecessary", is false.

Nichiren also teaches:

"Unless a person who is well grounded [in the Lotus Sutra] performs the eye opening ceremony (kaigen kuyo) it is like a thief entering a house where there is no master or when demon spirits enter a person's dead body...[Without the eye opening] a devil enters, seizes and takes away all the merit."

Those who believe and teach that "Nichiren is the True Original Buddha", those who believe and teach "the supremacy of one sole DaiGohonzon", and those who believe and teach "one sole priest or mentor in the seat of the Law", are not well grounded in the Lotus Sutra and they will cause devils to enter into their Gohonzon and into their lives.