It completely depends on the subject. Some subjects are easier for bots to provide commentary. I just suspect most of the AI related threads are started by bots and populated with commentary by bots.

Some of the junk comments really do come from people. I can remember a thread about what Linux somebody should adopt for a child’s computer. Most of the genuine suggestions just received hate. It seems the younger generation of parents didn’t want to actually teach their children anything, as in spend time with their kids, but at the same time could not bring themselves to admit this obvious realization. It was bizarre and irrationally emotional in ways that looked like embarrassment and hostility for a subject that was never about adults in the first place.

Some of it is definitely "clawd" spam, there was a good post recently called "No Skill. No Talent." (ns;nt)

You can see it more in /new and /show than comments, some of them also comment to look "real" and not all of it is directly "clawd", but new accounts with human operators that heavily use things like "clawd"