People take like 2% of the time to review and approve a PR compared to the person writing it.
For a 40h all week job that is less than 1h
Not enough time to even understand the requirements of a 40h job.
10h would be minimum.
Unless you are just checking that the style guide is correct and obvious missed null checks.
For this reason I feel code reviews are a bit silly and pair programming is way better (pairing with a mix of sync and async work) but that is an aside.
In addition a code review being short is usually because the coder and reviewer are both very competent. Once AI enters the chat the reviewer needs to look very closely at every line.
It’s going to be the same with AI. It pumps out a lot of code. Human does spot checks and probably uses other AI to help with the code review. A real human does the really hard, critical code directly. A more robust QA team makes sure it all works.
In some way reviewing code is more complicated and hard than actually writing it.
I really like the „reverse centaur“ metaphor by Doctorow regarding the automation AI will bring us - humans having to double check the stuff AI wrote for correctness in AI pace.