I am a lesbian. I don't like Star Trek. If a lesbian is fit as fuck, and a genuinely lovely person, and we got on well, it's entirely likely that if she was a Trekkie to the point of conventions and cosplay and droning on tediously about canon compliance, that I would reject her as a partner.
Am I Trek-phobic? No one gives a shit, because Trekkies aren't claiming to be some special group that need to be able to override boundaries.
Or say a woman was gorgeous, and our chemistry was good, but she was a very committed Christian and would require me to be silent about our relationship because she was closeted, so I said, nope, not interested in hiding who I am because your religion, no dice.
Would I be Christianophobic? What's the difference here? If a woman is a Genderist, I don't share her religion. It's entirely likely she would require me to call myself something other than a lesbian, and would likely require specific language from me too. Rejecting that might be 'transphobic', but all you're doing there is admitting transphobic means 'unbeliever'. And I don't give a shit.
I'm not a believer in Genderism. I'm not a believer in Christianity. I'm not a Trekkie. My sexual and bodily boundaries are absolute and I need to give no further justification than that. It's not me that needs to mind my language. It's the rapey fuckers who think no is the start of a negotiation.