When your Diamond players play the same as silver players, and your grandmaster players run it down just as much as bronzes ask yourself the question.
Literally, have any of you'll who have supposedly 'escaped' low elo ever felt like you were rewarded for doing so? Is the matchmaking any better? Are your teamamtes any wiser? Or are you still playing the same shithole of a game which you'll have always aspired to climb out of?