I used to think like that.
Then I grew up and realized if I'm in YY9 or QQ or wherever, if I'm yelling it doesn't really make a difference if my butt is on the aluminum or if I'm standing. I'm there and I'm making noise.
I realize there are some serious sticks in the mud at our games, but really and truly they're usually outliers and most of the complaints come from clods who insist on standing the entire game like they're still in the student section.
Sometimes those pesky elderly people love the Vols just as much as you, but their bodies will no longer allow them to stand for long stretches of time. Or maybe they're young and have health problems. Or have sustained injuries that won't allow it. Hell fire, there are more than a few VFLs on shredded knees that can't stand during a game.
You've got some serious gall if you'd run them out of the stadium for that reason.