He seems like an ignorant hothead as Morrison's social crusader. I'm enjoying Morrison's take (although his scatterbrained plotting is offputting in some issues), but that's just one step in Superman's journey. He kind of has to become more reserved over time, otherwise he'd be busting down the doors of sovereign nations and deposing corrupt dictators by force, which just makes him a bully who never learns that force can't always be the answer simply because no one has the force to challenge him and show him that. He'd have a very shallow, adolescent mindset--which I think is what Morrison was trying to show us in that scene with the JLA recently in Action Comics. Some of the wiser members had to talk Superman down from some of his more extreme views.