This blog of my idle musings, specifically, has been a source of call-outs. In articles from back in 2013 of all things. I also noticed that( ChatGPT?) seems to have replied to one of my latest (2023) posts, which I find odd and improbable
https://bogon-flux.blogspot.com
I get what you mean though, to me I don’t see the hallmarks of AI writing, but you will find the occasional em-dash and contrasted-constructions. I think some people see an em-dash and decide them and there that it’s AI generated, probably because they are illiterate by any reasonable measure of the term.