Seriously? Is there some "rule" in the US where "teams" have "to" be city"," then team name?
Yes, fans of other sports in the US don't sing to support their teams, they'd rather sit on their arse and eat hot dogs, cracker jacks and cotton candy instead. As for scarves, I guess you just don't get it.
Also, I've been to football matches in Ireland, England, Scotland, Spain and the US and "fans" in the US are just as passionate as "fan" as in other places. In fact, it is even harder to be a fan in the US with the borderline bigoted comments from yanks such as "Soccer is foreign" or "soccer is for sissies/girls" and also snobbish attitudes from Euro-league lovers.
As I've said before on here, I've supported local soccer wherever I've lived. I spent many a rough day at Terryland in my youth and now I bring my young lad to see NY play 5-6 times a season. I don't care it's not of the "quality" of the Prem or La Liga or Serie A etc. Yes it may be shyte but it's our shyte. If people only complain about the quality of their local league, they only have to look themselves in the mirror.