Many ppl have complain about the inability to report abuse regarding channel operators.
The easiest way to report the abuse is with your feet. You yourself said 'more and more' of the popular channels have less people, so maybe people are getting the idea.
I think you're missing the mark by pointing out channel operators, any
client of any
status can be a detriment to IRC.
[edit: there's a the in there that shouldn't be there! the the the!]