I have a degree in musical theatre and am a member of a music oriented fraternity. The fraternity was called "the gay" fraternity by the typical frat bro organizations within the last decade. Its not just relegated to the early part of the 2000s.
The gay theatre kid has been a stereotype forever, but they literally had to invent a word to describe guys who showered and wore something that wasn't a T-shirt because that was enough for even women to think you were gay. The homophobia was so bad back then that you could possibly lose your job if people thought you were gay because you used hair gel and dressed well.