As others have noted, the best camera is the camera you have when you need a camera. I have an iPad first gen, and there have been plenty of occasions when I wished it had a camera (front more often than back). Yeah, I carry a "serious" camera, lenses, tripod, etc. some of the time. I carry my iPhone all of the time. Yet I've still wished for a camera on my iPad. I'd also want a flash to go along with that camera. Oh well. Maybe next year.
Would I care if someone else thinks I look stupid holding that big thing up? No. There are plenty of other reasons for people to think less of me, this would just be one more. I care about getting whatever I need to do, done. And if an iPad happens to be the right tool (or only available tool), then so be it.
What's really pointless about this discussion is that it's become a debate over whether there ought to be a camera on iPads. That's a done deal. This article is about whether there'll be a better camera on the next model. If you use the camera, better is better, and a better display argues for a better camera.