New Players in silver ranked matches

So, as we all know. When u rank a new account u play ur placements in silver. Most people who come through on a new account have no idea how to play, especially since riot made the exp requirement lower. I've had many games in low gold and throughout silver with this problem. One team will have a couple new players with 40 cs at 20 minutes walking in the forest doing nothing, and the other team usually be mowing down towers, close to ending the game.

This is a serious problem Riot should address because it makes games uncompetitive and ruins the quality of a match. The point of matchmaking should be to match two teams with similar levels of skill, but having people who know nothing about the game, who spam warwick with infinity edge, does not meet this goal (or at least I hope its riots goal).

Don't get me wrong. I know I'm garbage myself. I'm in silver for a reason, but I would like to play at least somewhat competitive matches. I want to have fun playing against people of a similar skill level.

Riot, please address this problem by using a player's MMR from normals to determine where they play their placement matches.