Are there ridiculous fans in every fanbase? Absolutely. That being said, I highly doubt hoards of BYU fans would run out and buy conference affiliation stickers to put all over the place. So silly and petulant.
A work colleague was visiting Salt Lake once and asked, "I have noticed lots of Pac12 stickers on cars, why do you guys have so much love for that conference?"
I was actually embarrassed for my Ute friends and family.