[ Note: The term “trap” can also refer to trans-women]

The answer is somewhere between. Sexuality isn't a hard gay/straight/bi. It's made up of shades in between. If straight is 100 and gay is 0, bi would be 50.
I'd say trap fans (who arent attracted to masculine men) are around 70 or 80.

Bollocks to that. I'm a strict zero and I fucking love traps. Same goes for my boyfriend. Body hair, beards and muscles are gross. But vaginas are even grosser.

Are you sure you're a 0 then? If a straight dude told me he didn't like feminine secondary sexual attributes (breasts, long hair, petite), who preferred his women flat chested, with short hair and muscular/bulky it would certainly raise an eyebrow.
Not that that's wrong or that he isn't straight (if he's only into women he's straight), but I don't think that's a 100 on that spectrum... If you only enjoy your women when they're manly.
I'd expect a zero on that spectrum to like real manly men. For me as a straight guy relatively close to 100 reverse traps are extremely unappealing... (Because I'm not attracted to masculinity)

Well, I mean, there is absolutely no circumstance in which I would willingly have sex with anything that has a vagina. From my point of view you're straighter for having sex with Buck Angel than you would be for fucking Bailey Jay.

I don't really think it's "gayer" to like butch guys than it is to like feminine guys. I mean, is your idea of a person who is a zero manly as all fuck too, or feminine? And why? Cos when you think "super gay" you think femme, right?

Preferences are preferences. I'd argue a hypothetical Macho Steve McGristle wouldn't be any less hetero for having a bodybuilder girlfriend.