Leaver problem(suddenly!) persists

Sorry about my quoting method, couldn't manage the right way of doing it so far.
@r1ggedgame 
"How do you know they are impatient egoisits?"
Ok, poor choice of words is mine, i'm going to explain and expand this. In our cruel word the actions define a person in the eyes of others. They acting, like impatient egoists. Early leave is behaviour of person who don't want to wait(impatient) or/and leave their teammates justifying it by their unwillingness to waste time, not considering that not filled team gameplay is waste of teammates' time either(assuming his time is more valuable than teammates time - egoism).
Until you see "Squad eliminated" - squad acts its best to make way to the top, which most of the times includes teammates aid. The way of thinking and so - acting of another person may be not obvious to you, but that does not mean that he have no chance and intention to resolve the situation(until he leave, lol). If teammate(s) couldn't cover you in clutch, but safely respawned you and at the end you end up as champions - how can you consider this as letdown? But what is definetely a letdown - leaving team, willingly lowering its chances to win.
"Also , why do you even care ? Do you really think bans would help the situation ? A teammate leaving isnt a suitable mate in the firstplace and would be dead weight for the rest of the game anyway ..."
I care because i can not afford a prem(work schedule) and EA promised me [...peaceful, fair and respectful gaming environment ...]. Leaver problem breaks it. Extrapolating the behaviour of "most malicious" of them:
Leaver travel over dozens of lobbies until he gets into one where his luck finally shows itself and he doesn't get knocked down during the game. And he is leaving dozens of understaffed squads behind. While the first squad he left is clutching in the final ring, he already can change 5-7 matches - just imagine the amount of negative trail one person can leave behind with such (average) numbers. I never said about bans - just about forcing systematical leavers to use "no fill" option or, like that's been done with the cheaters(in other games) - separated to their own leaver lobbies. He won't be a deadweight most of the time - with such a game lifespan most of the players are expirienced, but this group need hard type of stimulus to not give up to their impulsiveness.

MM with mentioned tons of metadata can try their best to put together players with same skill/preferable gameplay style/stats etc., but it can not change temper of the persons causing this problem. Thats why the hard method is neded. If the player's personality is standing between him and good gaming expirience for him and other players - he must learn to control it or be excluded(that's how society works now). If you really do not expect fair challenge in PvP game - then uninstall really is the best way. But accepting the rules of competition(there is one even in pubs) must work both ways - for team and individual in it.