That’s the topic of the thread!!
(@faujidoc1 You’re a moderator and you’re sounding a bit like an apologist here, as well as derailing the focus of the thread.)
It’s because his writings have persistently been used by far right and neo nazi groups to invent a white supremacist version of Buddhism, which, due to ignorance and design, continues to have influence in Buddhist communities. There is genuine concern that these types of view are growing.
Bad ideas can’t just be magic-ed away, they need to be discussed and refuted.