It's more like "we found a cure for lung cancer and it works on 75% of patients and we're working hard to get to 100% and cure other cancers too" and someone else screaming "You need to stop that research because there is a 50% chance you'll cause the zombie apocalypse and turn us all into zombies".
I get this analogy isn't perfect but, (1) lots of people are seeing benefits. For example Mozilla claiming they used AI to fix tons of bugs. If there were no benefits there'd be no incentive to keep going (2) it's hard to verify the naysayers claims because they're guessing without proof. Sure, it's easy to follow their arguments and nod along but they are guesses similar to the population bomb of the 1970s