The above statements about the essences of Nichiren Buddhism are which sects did what is a partial explanation; it is clear that it was composed respectfully by someone sympathetic to a particular sect, SGI.  SGI has a powerful voice around and world and has historically represented Nichiren Buddhism to important world leaders who sought it's understanding.  There are at least 2 other schools of Nichiren Buddhism: Nichiren Shu and Nichiren ShoShu.  These sects warn of SGI (but do not prohibit) it's practice; many feel that SGI inherently contains certain personality-cult rituals, and too frequently worship President Ikeda (the current leader of SGI) along with Nichiren and Shakyamuni Buddha.  Nichiren himself has said that he was not a Buddha, but an incarnation of Jogyo Bodhisattva.  The path of the Lotus Sutra is the path of the Bodhisattva  one who delays their own enlightenment until all other sentient beings in the universe have been saved from suffering.  Schools like Nichiren Shu do not believe that the priest should not be worshiped, nor the president, only the Dharma, the Wonderful Flower of the Lotus Teaching.  Several western nations have placed SGI on their respective "Cult watch" lists, and in extreme cases family members have written letters to their governments for assistance in getting their relative de-brainwashed.  This is only in extreme cases with several exigent circumstances.