One of the biggest names in this history is Gene Kelly whom famously said in his day, "dancing is a man's game." The truth is that men have been dancing since time immemorial and at no time have these men dancing been considered effete or "Queer." In fact, women love a man that can dance with them. Men that dance show how well they move which is often very sensual and ones dancing style can tell a woman a lot about how that man will partner with them in the bedroom. Dancing as Gene Kelly mentioned is also a form of athleticism.
How dancing became associated with men being womanly or associated with gayness, or with being effete is beyond me. The truth is there is nothing more traditionally part of the heterosexual mating game than cutting a rug with your woman. Was Patrick Swayze in Dirty Dancing being queer and a fag? Or somehow being non-conforming to having a penis and testicles? I do not think so. How about Frank Sinatra? Fred Astaire? Danny Key? Clark Gable in his musicals? Carey Grant in his musicals? Gays do not own dancing in anyway at all. "Queer" is not at all a word that describes men dancing in anyway either.
Dancing is a human thing and it is not an effete thing at all. No man should feel less than for loving to move on the dance floor; nor should they feel less than for loving to sing along with it. This also connects to the odd idea that musical theater is gay, queer and effete for young boys or grown man. Once again dancing is a form of athleticism it just does not use a bat or a ball. It uses the body and a solid dance floor. It uses sometimes props which are associated with the dance this is the dancers own bat and ball. People whom classify this as non-conforming behavior in metrics for studies need to have their head examined.
No young boy whom likes dancing should be labeled as pre-gay children. Nor should they be labeled as gender variant or queer or pre-trans or effete in anyway at all. Nor should boys whom like to be singers be considered effete or pre-gay or anything. These things are not unmanly and these things are not to be attempted to be pushed out of a person. Let people be and let men enjoy singing/dancing to their hearts content.