The fact that you'd lump Crypto and AI together is simply pathetic. Crypto still hasn't actually solved any real problems or delivered meaningful value. AI has solved real problems and delivers astronomical value.
I'm willing to put my money where my mouth is. I'm willing to enter into a $$$ wager and assert that AI, specifically LLMs or similar systems, will only become more important and more in demand in 5 years.
I wasn't the one using "dollars pumped into the bubble" as a predictor for likely future success. If you don't like the comparison, come up with a better argument.
Let alone other hyped technologies that have failed to deliver, like self-driving cars, voice assistants, AR/VR...
Heck, the AI winter was preceded by a boom in things like expert systems, and I'll bet folks back then thought it'd never end, too.