Not sure what degree we're talking about, really, but the comment deletion volume is actually down in the last month versus previous ones. In fact, it's almost neck and neck with actual post deletion (usually a result of fly-by thank you or me too "answers"). However, comment deletion here is almost always a result of a flag on the comment and, typically, when that happens a few others will go with and I can't think of any recently that aren't hours or longer after the fact unless they're offensive.
It is worth remembering... https://photo.stackexchange.com/help/privileges/comment and noting that many of our comments here tend to fall into the shouldn't section of the guide.
However, while I still tend to be lighter here versus my other site, I have been cracking down on what Community Managers seem to want to call "answerments" or using comments to answer, especially on closed posts. Even then, though, most are still flag based and I only typically kill them when they're directly on the question rather than being an addendum to an answer. Nevertheless, even in that case, most people doing that have the ability to edit and answer and probably should. That's kind of the point of the editing ability.
