Sure, but there was still stuff like positioning (in encounters where you couldn't just get stuck in a corner), dealing with knockback and stuff, watching enrage later in the fight. I rarely played a Warrior in raids, but even without the requirement to move around a ton and spam a bunch of hotkeys, I still would have been much too interested in how the encounter was going to go out of my way to read a book while it was happening. I'm not going to say it didn't happen, but that guy must have been in a guild for whom the encounter was completely trivial or something.