> I think this was fairly obvious and fair 1 - 2 years ago.

And that's mostly for us, developers who use it all the time and maybe for other office employees. Not sure if random person would recognize LLM-isms.

Not even the random HN user detects LLM-isms. You regularly get downvoted for pointing it out. E.g. here: https://news.ycombinator.com/item?id=49087955