LLMs have absolutely put us in a similar place. People are getting customers/money by saying "Look at our AI-driven features!" But give it 5-10 years, or maybe less, and that will seem silly. People will be using LLMs for focused use cases and making sure they help the end users. You will be evaluated with a higher standard - of what you actually accomplish with your products. Saying your product is "AI-driven..." will be as stilly as saying your product is "RDBMS-driven..." would be today. Because it will be a foundational piece of the tech stack, not a marketing blurb.
I doubt it will be as big of a bubble as the dotcom crash, though. We may all still fall victim to hype cycles, but it is hard to explain just how low the bar was for investment during the original dotcom bubble. We are collectively wiser now, even as we stumble along the way.