Love is multiple things and is still meaningful for us.
Theoretically I can see somebody not being attracted to guys, as in masculine people, or just males, but still being turned on by penises as we see in OP’s example. That person might not call themselves gay since they wouldn’t want to be in a relationship with any guys, but might be interested in a hookup with a trans woman who still had their dick.
Maybe their is some nuance in what being gay is or there is room for another descriptor for this phenomenon.
Edit: reading below, this person might be hetero-romantic and homo-sexual.
People that don’t like the original after watching the parody probably wouldn’t like the original even without watching the parody. The parody just puts a spotlight on aspects of the show that lots of people noticed and they probably already have an opinion about those things in their media.
Don’t put too much stock into other people liking the things you like. They have their own very specific individual tastes and you can be good friends even without agreeing on lots of things.