No, it isn't. That's the most susceptible time for someone to jump on the bandwagon. When I was 8, Joe Montana was winning Super Bowls. Wanna know who the popular team was in my classroom growing up in Columbus? 49ers.
I've tried to theorize how so many Steeler fans live in Columbus. It's not a Pittsburgh thing, because no one is a Pirates' fan. So the only thing I'm left with is the residual 70s bandwagon. A lot of people grew up in Midwest in the 70s watching the Steelers and Cowboys, then sucked up through the 80s, and were loyal enough to be rewarded again in the 90s and 00s - and, unfortunately, they passed it on to their kids. So now, I'm surrounded by Steeler fans.