"NFT" didn't have any hooks in our cultural consciousness, so that's why when people started kicking the tires, the hype quickly died down.
"AI", on the other hand, is something we've been promised (and warned about) for decades. Also, the term is being misapplied to all sorts of commercial products, some of them that existed before the ChatGPT hype which is confusing the uninformed person because since now "AI" means whatever the company says it is, they can over-promise and under-deliver, as long as they deliver *something* sometimes.