Congratulations, you finally got someone to watch the whole thing.
He's fairly obviously cis.... one would assume. Hey what 80'preppy frat boy. You don't know the rules, and without movies and literature from the era, people wouldn't.
Rules can be anything. Over time they may change. If this were sung by a lady or in drag, it would be praised.
Hmmm perhaps he's just kinky and left his leather at home.
Its beautiful story about loyalty, responsibility. Perhaps a little pushy of cis norms only as assumed by narrow context of the era. I would love to see a king or queen, as well as a leatherman sing it.