AI code review to me is similar to AI code itself. It's good (and constantly getting better) at dealing with mundane things, like - is the list reversed correctly? Are you dealing with pointers correctly? Do you have off by 1 issues?

Where they suck is high level problems like - is the code actually solving the business problem? Is it using right dependencies? Does it fit into broader design?

Which is expected for me and great help. I'm more happy as a human to spend less time checking if you're managing lifecycle of the pointer correctly and focus on ensuring that code is there to do what it needs to do.