And how are those highskill players low ranked, unless they just concede everysingle game?
People might be confused that even if a player is top100, he will be matched against a 5000rank guy, given some time to the MM. I think the system should had some kind of barrier to avoid such disparity.
Exactly. If you really are highly skilled you'll have no trouble getting placed in the top 100 after your 10 placement games. Even after that you climb the ladder very fast if you keep winning, so past your first 10 games you almost don't get to play against lower skilled opponents solely based on your MM rank.
The only instance where you get matched against lower skilled opponents is when you've been searching for a long time and no opponents of your skill level have been found, so the search radius expands and the matchmaker will give you pretty much whoever is available. But that happens even to non smurf accounts.
So unless those smurfs lose all the time (in which case no one would be complaining) or there are no players of their skill level playing when they search for a game, they won't get matched against lower skilled players.