You are kidding, right?
The reason theymos bans mixers is that mixers are openly promoted on this forum. There is a lot of discussion in their ANN threads too. Are there many places where mixers can promote themselves as well as they can on this forum? There are none, right? So, believe it or not, this forum can become a target too and why does theymos has to risk everything? Who is responsible besides him if forum gets seized if he follows your advice and doesn't ban mixers? Are you responsible? He hasn't completely banned them too.