CollapseComments's capability is not limited to comments by brain dead idiots. It can be used to suite individual liking. The extension does not decide if a particular comment is worth reading or not. Its up to the user to decide whose comments he/she does not wish to read.
So, for a very far fetched example, if a particular moron don't want to read comments by someone that wake him up from his dream, he too can use CollapseComments.
I'm attaching two screen shots, depicting its use against different individuals.