Seems like a catch-22. For codebases that I'm highly familiar with and regularly perform code review in, I'd say "thanks LLM, but I don't trust you, I'm more familiar with this codebase than you, and I don't need your help." For codebases that I'm not familiar with, I'm not really performing code review (at least not approving MR/PRs or doing the merging).

But still, this is very creative and a nice application of LLMs that isn't strictly barf.