I've seen Douglas Adams use almost exactly this in Dirk Gently's Holistic Detective Agency. A professor (IIRC) is talking to a former student. Quoting from memory
"Did you ever actually finish any papers?"
"No. But the reasons why not were always absolutely fascinating."
So, yeah, for me personally it's not an AI tell. I've seen it in the wild before AI.
LLMs glom onto pre-existing tropes, idioms, and verbal constructs.
Yeah, but that doesn't sound like AI at all. Not even close.