It’s not X, it’s Y.
Tons of people on the internet write in this style. I did, frequently, well before ChatGPT.
That’s where LLMs got the habit from, then inbred it into each other. Dare I say it may have bled back into human writing too.
Personally, I’d want to block “is this or is this not AI” threads on Lemmy. I’m sick of people thinking they’re human LLM/diffusion detectors when that is (outside of obvious cases, or logit watermarks) physically impossible.