The performers who typically are thought to attract the "stereotypically" gay audience (Merman, Channing, Garland, Fierstien) actually do very little for me most of the time. It has nothing to do with the fact that I'm straight. I appreciate why they are icons (well, I don't quite get Channing), but other than in very certain roles, I don't typically enjoy those performers. This isn't to say that that's 100% true - I like several gay themed musicals (Falsettos is one of my favorite shows) but why shouldn't I? I'm not Siamese and I like The King and I. I'm not French and I love Les Mis. I'm not a cat - well, OK, I digress.
The thing is, most people who categorize musicals as "gay" do so based on these aspects - the things that are KNOWN to be iconic gay figures, and it takes a certain type of person (gay or not) to enjoy them - they are NOT universally appealing. Because of the association in the public mind, though, those artists "go" with gay folks, and in turn are linked to the theater world. Those who decry theater as gay have never seen - or probably even heard of - the majority of what those of us who love theater treasure.
Hi, Shirley Temple Pudding.