Again I ask, why is it so bad that players have a way higher elo because they only play a specific map?
It doesn't affect anyone playing any other map.
It is not "so bad", as it is how things are on Voobly and we all are alive and able to play and have fun etc. But it's literally the one and only reason to even have an automatic matchmaking. If people are allowed to fix their matches like on Voobly, why would anyone ever bother with the matchmaking? Some ppl just prefer the idea of having a more competitive ladder even if you dont. And it is not "so bad" to play BF TG or LN FFA unrated, either.