I dunno, man. I think that belittles the concerns of these folks who wear these shirts.
Like I said, you don't know who these people are and why they support Obama. I'm sure you're right that some of them think he relates better to poor people.
But I don't think it's a stretch to say that for every person there are different issues that activate their support. You're forgetting about the war, for instance, which is a pretty big deal. It's a mistake to write off Obama's supporters as crazed about the new entitlements he will offer them and bringing socialism to this country.