I can probably provide you a list on the people who actually do what your talking about.
The problem with kicking smurfs out of the game is that they would just rejoin, rejoin and rejoin, there's no permanent block mechanism for that particular profile/or user name to be excluded from that game.
Reason? Annoy the host, ruin the game and then create their own game with there own set of rules.
As a (former) player of the game, you understand that some people have major social issues. Some players would like to be the host of every game there in, to what purpose? So they can exclude every player who has annoyed them, either through making mistakes or talking back to them.
Because of the extremely low player numbers, this problem is extreme in the sense that the ratio of idiots to 'normal people' is far less then the ratio of other games. ( A prime example of this can be seen in Battlefield 3, theres always one person who decides to run to a passenger helicopter and fly off with just himself in).
This game has had many flaws, not for the single player, but for the multiplier. You have to enjoy it for what it is: 2 hours waiting to 1 hour actually ingame time.
Please nominate Black Hawk as the Republican Iowa candidate 2012