Yeah, it is. Otoh, it's always sold out, it's rambunctious, the tickets sell out during pre-sale, and the wait list for seasons tickets is measured in years. So while it's small, that's not for lack of support or enthusiasm. It's just a function of architecture.
wasn't there a statistic recently which stated that MLS has the highest percentage attendance of all major sports leagues in the USA? I think part of that is related to the smaller stadium sizes in relation to the NFL and MLB, but interesting nonetheless