Nothing changed in the matchmaking, Afk and trolling reigns and goes unpunishable

I am a bad player playing in gold 5. I try to play the game and get better, but still i get an afk in 2/3 games and cant really play at all. In the last game, i had a guy who got level 2 and then left the game, on purpose. He never reconnected. I checked his history and i saw that he was unranked last season and this season, it was his first ranked game.

So im asking Riot, why is he even in ranked queue? Why is he playing in this mmr? Why doesnt he start at a lower mmr where afk is even worse? I cant blame this guy, because he has no experience whatsoever of the game and the ranked queue in general. I can therefore, blame Riot, for giving him the option to play in this mmr though and ruin the game.

Guys, you are totally incompetent to fix the matchmaking. The game might be fun, like in 1 out of 5 games, but the percentage of games with afk that goes unpunishable or the total uneven teams is way out of control.

Just give us a real reason, why this guy, with 0 games in match history, suddlenly joined the ranked queue and "played" in a game where half of the players were gold last season. It makes no sense to me. Plus, it makes no sense why you don't punish, intentional feeders and afkers who do it on purpose.

You are punishing people for flaming, but that's no really because you care about the "language" or the game itself. You punish the flaming because in 70-80% percent of the cases is the result of your own real incompetence to make a real matchmaking system and not a lottery.