Matchmaking makes ARAM games unbearable

Meanwhile Riot keeps giving X champion 5% more damage while making Y champion 5% more vulnerable in ARAM when the biggest problem is the matchmaking. Even if you make all champions have 50% win rate, ARAM is never going to be balanced when diamonds matched against silvers.

I know ARAM games have their own mmr but that's too ridiculous. The fact that a silver player who beaten bronze players and have above 50% win rate doesn't mean he/she can match against diamonds.