Who are the bitter ones?

Was Nichiren Daishonin, who once practiced the Nembutsu before awakening to the pure and perfect teachings of the Lotus Sutra, a bitter man? In repudiating his prior erroneous faith and practice, was he a bitter man or was he a compassionate Mahasattva warning of the pitfalls of the Nembutsu that he experienced first hand? Rather, you who enter the treasure mountain without arms and who slander me, a votary of the Lotus Sutra, are in fact the bitter ones. The “flexibility” that you and SGI advance amounts to a destruction of the principles and practices of Shakyamuni Buddha and Nichiren Daishonin.