It’s not heteronormative oh person with a hammer. You simply lack perspective, as yours seems entirely based on sex and literally none from kink.
Doming and Topping are two different things in the kink world, and imply similar yet drastically different things and are very deliminaited in play.
And even to the comic, it’s BDSM/kink coded more than anything.
When he discovered it’s an easy grift, and even easier way to get attention which is what he really wants. Dude is a sad little man child, constantly searching for adoration. These are not deeply held, or even shallowly held beliefs he’s just doing whatever gets his audience to be nice to him.