"Unless expressly stated otherwise, the findings, interpretations and conclusions expressed in the Materials on this Site are those of the various Soka Gakkai staff members, consultants and advisers who prepared the work and do not necessarily represent the views of the Soka Gakkai, its affiliated organizations, or its membership.” — Words of Wisdom “OFFICIAL” SGI publication.
Nichiren's advice? Go to the source, the Lotus Sutra and his writings. In authentic Nichiren's Lotus Sutra Buddhism, the views of Shakyamuni Buddha of the Juryo-hon Chapter, Nichiren Daishonin, and their disciples and believers are official.
This way they can change their views and doctrine whichever way the wind blows. More importantly, since their views are unofficial what use their guidance?