In total honesty I don't know why there are so many subdued Cougar fans that come faithfully to games, but have no emotional involvement in the contest. I've never seen this phenomenon any were else on this planet.
The west stands is where I am at and while I don't sit with all the CC members that have the great seats, I think blaming the lack of enthusiasm on the older crowd is not totally correct. I have just as many younger people around me that seem like they have no emotional involvement in the games either. They just don't sneer at you when you do cheer. They are much more passive in that regard, but they sit and talk like they're at their local fast food joint oblivious to what's going on down on the field. I really don't understand either group.
Yes, I do the same kind of noise you speak of and I get stares and I just glare back at them. No one has ever tried to shush me as I'd just shush them back and tell them to go home and watch it on the TV if they didn't want any crowd noise. I'm not shy about doing that whatsoever. I'm not certain as to why those folks think it is in poor taste to cheer on your team, but I've found Utahans to be a peculiar lot of people in total honesty. Some of their idiosyncrasies are admirable, but there are quite a few that drive me nuts.
I've seen louder sacrament meetings than some of the games tend to be.