I was OK with this answer right up to "be big about it, accept it and move on", which annoyed me because I don't want to spend time writing comments that are rejected if I can avoid it.
I was not asking for a reasoned argument, merely something more like "Too long" or "Libellous", or even "I just don't like your tone". I'm sure that you could come up with a list of about a dozen, and then select using icons or changing the "reject" button to a drop-down selection box. Two clicks rather than one, and you must have thought about a comment in order to decide to reject it.
I fully expect to see this in the reject pile in a few minutes.