I do think the initial reason for wanting to block AI scrapers is genuine. I've heard and witnessed AI scrapers absolutely more or less DDoS entire sites because of how they simply do not respect things like robots.txt or just mass request pages like mad, so having multiples of those come in and essentially suffocate the website is... kind of shit, honestly. Now in his defense he kinda outlined this in his post about TCRF getting DDoSed, but he didn't really give it the full in depth essay.
That said though, I think it's one thing to validly block bots for the sake of "my site is going to get borderline DDoSed if they access this", but it's a completely different ball game where you instead maliciously respond. Or in other words, this retard is needlessly being aggressive once again and deserves a pretty solid ego check, and ideally more than just once at that. You can block AI requests without being a shitter, but I don't think that's in his own programming.
edit: I'm also convinced that because it's related to "AI" it triggers that specific unfathomably retarded and exaggerated sperg hate tons of these retards have about AI stuff. To be fair I get the concern, but the way they behave about it is like a switch flipped and they act like rabid dogs about it. And quite frankly like a rabid dog I'd like to put them down.