Nichiren and Tientai refute the common man is the Original Buddha theology

"Great Concentration and Insight says: “If one lacks faith [in the Lotus Sutra], one will object that it pertains to the lofty realm of the sages, something far beyond the capacity of one’s own wisdom to comprehend. If one lacks wisdom, one will become puffed up with arrogance and will claim to be the equal of the Buddha.”