Computer science is still science. You distrust the experts in the field based on what? Something you saw on social media? Certainly not your own expertise, that much is clear.
Don't move the goalposts. No one is claiming that "AI" doesn't have downsides. That's different than your original claim that they didn't do what they appear to do.
I don't suppose you happen to be in a field threatened by AI? In my anecdotal experience, the people that desperately want to pretend AI is all a scam are actually worried about the opposite, and their job. (A real concern I'm in no way trying to minimize.)