Estavillo claims the company "continues to maintain a harmful virtual environment to many of its customers by forcing them to follow [World of Warcraft's] sneaky and deceitful practices".
And what could those "sneaky and deceitful practices" be? Walking is one of them, as he feels it takes too long to get from one point to the other in the game world. Because you can only speed up through extended play or buy purchasing an expansion pack, that qualifies as "deceitful".
He also believes that, because of a litany of health problems he suffers from (including OCD, agoraphobia, depression and Crohn's Disease), he's at risk of sharing the fate of Shawn Woolley, an Everquest player who committed suicide in 2001.
The best part follows: to back up his claims, Estavillo has subpoenaed Winona Ryder (who would presumably be able to "explain the significance of alienation in Catcher in the Rye") and Martin Lee Gore, of Depeche Mode ("he himself has been known to be sad, lonely, and alienated as can be seen in the songs he writes").
Best of luck, Erik.