His track record of prediction on this topic is stunningly bad, and he's made a job out of being counter to the AI hype, so he seems likely unable to honestly update his beliefs to adapt to changing evidence without jeopardizing the attention people pay to him.
And I think a big part of why you shouldn't listen to him is that he's said repeatedly that he doesn't really use generative AI outside of occasional experiments - he hasn't seen its potential enough to bother using it himself beyond some initial tests. Which is fine, but I think it also means that he likely doesn't have a good intuition of the likely future demand, which is pretty key in figuring out whether debt loads are likely to be sustainable or not. Investing is fundamentally about trying to predict the future and putting your money into the things that will likely be successful there. And he's demonstrably been terrible at predicting the future of this stuff.
It would be one thing if he once admitted that he was wrong and adapted his world view to account for new information, but he just doubles and triples down.