I've worked with a lot of interns, fresh outs from college, overseas lowest bidders, and mediocre engineers who gave up years ago. All over the course of a ~20 year career.

Not once in all that time has anyone PRed and merged my completely unrelated and unfinished branch into main. Except a few weeks ago. By someone who was using the LLM to make PRs.

He didn't understand when I asked him about it and was baffled as to how it happened.

Really annoying, but I got significantly less concerned about the future of human software engineering after that.