In any case, either discuss the actual stuff at hand, or if you think it doesn't belong here then flag it and move on. Filling up the whole comments section with discussion of the guy's mental health, ground which has been so thoroughly trodden that it's in danger of breaking through to the magma, is just ridiculous.
It certainly isn't helping the quality of content on HN, if that's all you care about.
But you're in the minority in thinking that TempleOS doesn't belong on HN at all. Terry and his work are something that a lot of HN users care about, sympathize with, etc. No doubt some of the interest is just gawking and the pseudo-debates we invariably get about it are a scourge, but I don't think it would be fair to just ban the subject completely. Certainly many legit HN users would be upset if we did. So it's likely to remain one of those uncomfortable grey areas with no agreement and no clear solution.