Comment by scellus

It may be a talent drain too, but at least it's a selection bias. People just get enough and go away, or don't comment. At the extreme, that leads to a downward spiral in the epistemology of the site. Look at how AI fares in Bluesky.

As a partially separate issue, there are people trying to punish comments quoting AI by downvotes. You don't need to have a non-informative reply, just sourcing it to AI is enough. A random internet dude telling the same thing with less justification or detail is fine to them.