How did they get "lured" into the ban? Looks like Valve decided to ban them already, they just had fun with how they presented it.

I don't even play Dota, but this warms my heart

If you're not up on your Dota lingo, smurfing is a phenomenon whereby seasoned players start new accounts for the purpose of being matched with newbies they can easily stomp, which sucks for the newbies and is kind of pathetic behaviour on the part of the pros. Behaviour score farming, meanwhile, just means paying for people (or bots) to give you a thumbs-up in Dota's player behaviour rating system, the one that's meant to keep toxic players away from, well, nice people.

Thanks, article. Also, no surprise how easy it is to game these systems. Catching these smurfs should be easy, as most will either completely forget to use a VPN, or make a slip sooner or later. The fact that these players go out of their way to effectively play with a huge handicap in their favor shows how pathetic they are, much like gankers (max level players who harass and kill lower level players) in MMOs