It's important to be open minded, but at the same time it's important to also have a filter for what's actually worth examining in depth and what isn't. Otherwise you waste your time going down fruitless cul-de-sacs to nothing. Which is exactly how you end up spending your life making something completely useless like TempleOS.
Additionally, the author thrives on attention. He's been around forever, it's true. But every time he gets any attention he goes on what seems to be a manic streak which erupts in the racist diatribes and nonsense.
He certainly does need medical attention. He does not need this kind of attention, treating his delusion seriously.