I'm not sure Zitron's stance is about AI's capabilities as much as what the financial situation is, and the capabilities question is more the investors playing roulette that AI will somehow become AGI and change labor forever.
However from what I've heard of his views, it's usually "hey maybe we shouldn't be investing another trillion into an industry that took a trillion and isn't profitable", and how that the bulk of the US economy is between two non profitable AI companies and cloud providers, with cloud providers using most of their cloud on AI and AI getting most of their money from cloud providers. And that inherently is fucked from a financial perspective, and will end when they run out of money to invest. Pop.
We need to separate two concepts with the AI conversation. Is it a real technology? Yes, it is. And it works, often. It isn't the scifi world ending technology they want you to believe in, but damn can it make an android app quickly. And get most of the buttons right, if you test it enough and ask nicely.
And there's the other concept: a financial bubble. A financial bubble can exist regardless of whether a technology is real. The dot com bust happened and destroyed forward thinking companies like pets.com and WebVan, because at that time no one wanted to buy groceries or pet food online... And those companies at least didn't know how to profit doing so.
Consumer trust in internet purchases took roughly 20 years to catch up to the real internet technology, and here we are. Pets.com or WebVan are basically just replaced by Amazon, another dotcom company that was actually run profitable like a business. And if you won that roulette guess on an online book seller, you would've made a fuck ton of money.
AI is causing a financial bubble because, regardless of what it is, the investors are stupid gamblers who are drunk in the casino and want to win everything they lost in this fucked inflation economy.
A bubble has very little to do with a technology and its utility and much more to do with investor behavior, and right now we have the makings for an economic disaster.