The PR? He said it was AI in the comment you replied to...

I don't think the post itself reads like AI at all, but that's just me.

The post is absolutely LLM-generated. “Punchy” short sentences, “… has quietly come to mean …”, “The optimized paths weren’t there to execute.”

I think "this" refers to its parent comment. Part of it sounds like Claude wrote it. AI-generated comments aren't allowed on HN.