It is quite clear to everybody it is a bubble and a lot of the AI stuff is sand-castle based or vapor based... At least those of us understanding what the current crop of AI does
There's a pair of seriously bad assumptions underlying your analysis:
(1) What AI does right now is all it's going to do. Given the way capabilites have grown recently, this is a ludicrous assumption. Keep in mind that ChatGPT was launched November 30, 2022... it's less than three years old! And the reasoning models are barely a year old. There is no reason whatsoever to assume that this technology has peaked.
(2) We already know how to take full advantage of AI. Every time a new technology comes along it takes decades for us to fully understand how to effectively use it, and to deploy it everywhere it is useful. I'd say we still haven't fully incorporated the Internet into our society, and we've been working on that for over 30 years now. We're barely beginning to understand how to use what AI we've already got, and it'll take years, if not decades, for the full economic benefits to be achieved -- and in the meantime AI is probably going to continue improving.
The AI thing absolutely is a bubble, but it's not "sand-castle based or vapor based". It's very real. The problem is that the massive wave of investment is going to have to start generating returns within the next 3-4 years or else the financial deals that underpin it all will collapse. That doesn't mean the technology will disappear, it just means that the current investors will lose their shirts, other people will scoop up their assets at firesale prices, and those people will figure out how to deploy it effectively, and create trillions in economic value.
Well, assuming AI doesn't just kill us all.