Would you agree or disagree that there has been a jump in LFR queue times since flex was introduced?
I'm not saying verbal abuse doesn't happen, I'm saying that it's not the primary reason for tanks waving adios to LFR. Even if people were nothing but cordial to each other, you'd still see a drop in participation. But that is my opinion, nothing more, and of course Blizz is going to be able to measure this in ways I cannot.