Basing one's arguments on Daisaku Ikeda's Human Revolution violates the Buddha's teachings of "rely on the Law and not upon persons"

"Moreover, Mind Aspiring for Enlightenment [on which Kōbō bases his argument] is not even a sutra. To base one’s arguments on a treatise is to commit the error of turning one’s back on what is superior and following what is inferior. It also violates the Buddha’s teaching that one should “rely on the Law and not upon persons.”