The claim in the blog post that all technology leads to speculative asset bubbles I find hard to believe. Where was the electricity bubble? The steel bubble? The pre-war aviation bubble? (The aviation bubble appeared decades later due to changes in government regulation.)
Is this an AI bubble? I genuinely don't know! There is a lot of real uncertainty about future cash flows. Uncertainty is not the foundation of a bubble.
I knew dot-com was a bubble because you could find evidence, even before it popped. (A famous case: a company held equity in a bubble asset, and that company had a market cap below the equity it held, because the bubble did not extend to second-order investments.)