But that is, regrettably, also the case for retail. You are expected to spoil the dungeons and raids for yourself by reading up on everything the bosses will do, before you first enter. Nobody has the patience to go in blind and figure out their own strategies. And you're also expected to use addons that will tell you exactly what to do and when.
That's what made me lose interest in the game. You're not the player. The addons are. You are doing the one thing they can't: Press the buttons for them. You're the input device. I hate this so much.