There were some in this past Sunday Rumble. I am not referring to my games, though it made have happened on the other side, I did not pay any attention to switching. We had our "long range" and "short range" setup and stuck to it.
I can almost guarantee, in most matches, someone says, hey look what they're taking, how about we do this instead.
Either we need to decide whether we are going to make picking and counter-picking part of the game, officially, or we should Blind pick, or we should have a couple different ways, and tournaments can choose which they like.
Right now, there are no rules. It needs to be addressed.