Complex sentence: Theatre, specifically Broadway musicals, are a component of another stereotype, the "show queen", generalizing that all gay men listen to show tunes and are involved with the performing arts, and are theatrical, overly dramatic, and are campy.
Split into simpler sentences: Theatre, specifically Broadway musicals, are a component to another stereotype, the "show queen". The stereotype generalizes that all gay men listen to show tunes and are involved with the performing arts, are theatrical, dramatic, and are campy.