> why did you put it up for a human review at all then?

This seems to be the crux of the issue.

I'm guessing the most of the time, the answer is "because that's a mandatory gate to getting these changes into production". If the PR author doesn't see the value in review, it's going to be hard to convince them to write reviewable PRs.

If they're actually looking for human feedback, telling them how to submit PRs in a way that's amenable to human feedback is going to be a lot more successful.