And yes, current models are amazing at reducing time it takes to push out a feature or fix a bug. I wouldn't even consider working at a company that banned use of AI to help me write code.
PS: It's also irrelevant to whether it's AI generated or not, what matters is if it works and is secure.
There are literally users here that say that it works.
And you presume that the code hasn't been read or understood by a human. AI doesn't click merge on a PR, so it's highly likely that the code has been read by a human.