AI is far from perfect and makes all sorts of weird mistakes, but so do people.
I gotta pull you up on this one. Realistically, they're not in the same ballpark. The mistakes made by people are so minor and infrequent they can be trusted to perform brain surgery, and the kinds of mistakes made are things like 'we miscounted the sponges on 1 out of 1000 surgeries,' or 'I took too little tissue and didn't get all the red cancer out of the identically red tissue because I was trying to conserve quality of life,' while LLMs are doing the equivalent of hallucinating a spleen inside someone's head or ignoring the cancer to look for cankers. You can't even rightly call of a mistake because the LLM isn't 'trying to do something and failing.' It's just producing probabilities and we're hoping they're useful.
When it's really important to get something right, we have a person double check the work of the first person, which they can do, because they are grounded in reality. When you want to check the output of AI, you use a person for the same reason. AI has no grounding in reality, only words, which are famously not the same thing as reality if you have an intellectual age greater than seven.