AI is very useful in review, I won't put anything up for PR until it passes AI review.
However AI is just a tool, it isn't magic. I still find a lot of things that AI missed when I review code.
AI can likely do a lot of QA work, but I still want a real human to test the code. At least code that humans are expected to use.
BTW, PR review is a flavor of quality assurance activity. People are arguing it can be replaced with AI review.