Some of us are cut from that mold of "you don't get extra credit for doing what you're supposed to do, but you will get criticized for under-performing." Happens every day in the working world.
It's not that we're not pleased with someone doing a good job, we just don't participate in the constant rewarding for meeting expectations. That's why Neville fills up. Do you think everyone is there to watch under-performing employees? Also, that's what the team is getting paid to do....perform well.
Nothing wrong with over-the-top positive folks; there's a place for them. But this is the real world, and it's full of folks who can both take criticism well, and give it, and therein lies the difference.
The ironic part? The positive crowd is the unhappy one today. The rest have lives beyond a sporting event when it's over.