I'm 55, and I own a Kyle Williams Jersey. I wear it the couple times a year I make it down to Busby's in Santa Monica, CA to join other Western NY transplants for a great game-day experience. Most of the things you are saying are fair points, and if you are only watching the game for the strategy, and athletic spectacle only, well... that's just fine. That's obviously a huge part of most fans enjoyment of the game. There are many other fans who, along with the strategy, and game-play, also enjoy following the culture, and character of the team. For those fans (and, I am among them), this is a great year to be a Bills fan.
But, believe it or not, if you're going to call out people like me as being childish, you're not exactly presenting yourself as a pillar of maturity. There are some truly brilliant posters on this site, and I'd be pretty surprised if the majority of them didn't own jerseys. I know Astro has jerseys-- I've seen photographs of him wearing them. Are you going tell me he has the maturity level of a 14-year-old? It's cool to be cynical. Blithely insulting is frankly immature.