I don't think I was able to express my point well.
I'm specifically not asking you to run your LLM lose on it. I'm asking you to add the specific knowledge that you have that the author/LLM doesn't to the review. I tried to jot down such examples in the post.
Your point was expressed well and makes sense. I tend to have the LLM explain the PR to me and I'll do a back and forth with it on the various decisions in the PR and their ramifications. That seems like a better way than reviewing every line, and agrees with your point in the post.