Here's an example of a question that's a bit older. The last edit of the question has been 3 years ago. At this point it seems clear that the comments there are not going to be used to improve the question (or the answers).
The question would be more clean if all of these comments, all of them not doing their job and just being a distraction, would be removed. However, flagging 26 comments is rather tedious.
So I just randomly flagged one of them and I'm assuming that that's enough. However, it feels mean towards that one comment, when it's not even the worst offender. So I want to be sure: Is flagging any comment as "not longer needed" acceptable in that situation? Or is there another way to make my intentions more clear?