There are 4 people on your team who could be boosted and 5 on the enemy team
So stop complaining that the boosted animals on your team are holding you back. If the large majority of Gold to Diamond was really boosted it would be favorable for the "true competitive and fair players". Maybe it isn't Dynamic Queue's fault, but your own.
The same goes for feeders, flamers, trolls and everything else. If you are really the nice player you claim to be, then it is an advantage for you.