I think you make a good argument for why he shouldn't attend.
On the other hand, there's a fine balance between that issue, representing the team, appeasing the fans and possibly even sponsors in business related matters, and solidifying his place in NFL history since it's a historic championship game in SB50. After all, he doesn't want to come off like Roger Goodell on opening night, hiding in the shadows.
I think he's damned if he does go, and damned if he doesn't go. That's all we'll hear, about how "arrogant" Brady is that he didn't even bother to show up. Bummer either way.