"A dragon, two air elementals, a clay golem and an efreet? I kill 'em. How am I going to do that? But I'm a barbarian, I should know what weapon to use on each of them. My character should know, can't I just roll an attack and kill them all? Tactics? My character should know what tactic to use. If you're gonna make me think up all this myself, I'm not gonna play. Man, why are you holding up the whole game just to make us think up how we're going to fight these guys, let's just skip it. I've got a strength of 22, can't I just say I'm so strong that I beat them all?"
How is that any different than marginalizing puzzles for the sake of "role-playing"?