In my experience (NCAA Div I, Olympic Trials-- never made the top) delighting and mocking a downed opponent was considered low and poor sportsmanship and rarely practiced at the higher levels (quite different than "ribbing" ). Maybe athletics are different now, I guess.
I, personally, don't care that much. I prefer the PuG v. PuG environment, but I still queue up regardless (A solo queue only day would be fun). I was merely trying to be constructive to keep people playing rather than push them out. But, as you say, you would rather they didn't play at all. And that's fine, I guess. Not really my style, since it is, after all, just a video game.