Why? "This was written badly" is a perfectly normal thing to say; "this was written badly because you didn't put in the effort of writing it yourself" doubly so.
It's like complaining that somebody typed a crappy letter rather than hand-wrote it. Either way the letter's gonna suck, so why complain that it was typed?
Not true. It's likely an effort issue in that situation.
And that kind of effort issue is good to call out, because it compounds the low quality.
So, it's the style you oppose, the way a grammar nazi complains about "improper" English
> and in exciting new ways (e.g. by introducing factual errors).
Because factually incorrect comments didn't exist before AI?
Your concern is that you read something you don't like, so you pick the lowest-effort criteria to complain about. Speaks more about you than the original commenter.