creating debate in a post through comments, too.
It happens less now for sure, but it is still possible at times - funnily, often over rewards :)
I am starting not to respond to the nonsense comments at all, and those I think are just fishing, I will goad them a bit into putting in some effort.
I have also observed the repetition of automatic comments inserting advertising of some possible benefit
There are some, like the comment muted at the bottom of this which is not actually automatic, but it is a form comment from a curation group. I support that group with a vote, as well as some of the authors from it on their own posts. But, the comment itself doesn't add value to the discussion.
There is a lot of material to cut through, that's the way the world is.
Unfortunately, attempts to make it easier with algorithms, tends to get leveraged for marketing sales.