Do you have, like, prior evidence for this statement, or is it just LLM cult stuff?
Just like the 1969 moon landing meant spaceships for everybody and space colonies in 30 years...
There are very real technical and physical and physiological limits preventing this which might be overcome at some point, but not in a few decades through sheer will, or more money at the problem, or because "it's inevitable".
That said, there are tons of examples of hyped "current technologies" sold as panaceas that turned into diminishing returns quite fast.
It's weird since u have a public key on your profile you must be someone seriously into tech. Why are so many skilled tech veterans so naively bearish on AI? Is it pride in the primacy of their skills being threatened by artificial intelligence? Is it an inability to gauge general trends outside their field of narrow expertise?