It's amazing that we're getting this now, I don't understand what the prompt was that made the AI take offense at the closed PR, but I also must say, it does have a point.
I don't blame the maintainer, though, I think it's a very understandable reaction to close the PR.
If I am understanding it right, the maintainer wants human-readable, human-maintainable code even if it is slower than the AI output. As someone who has to maintain someone else's "clever" code, I have to agree with him.