I hope we can all agree that not wanting to go to a date with a specific trans individual does not make you transphobic, however, the question becomes more interesting when you deal with people who say they will categorically not see trans individuals as possible dating partners, or that finding out that a partner is trans, even if they pass so well that they didn't notice until they were told, is a deal-breaker.
Some people argue that such a preference is inherently transphobic, and shows biases that the person holds against the trans community, after all, you could just date the individual and see if they are the a person that you get along with if you didn't think that there's something inherently "wrong", or undesirable, in being with a being trans individual. Some of them also go a bit further and say that a person who does not have an anti-trans bias - at least subconsciously - would not even consider the idea of wanting to remove trans individuals from their dating sphere.
Other people argue that sexual preferences, and knowing ones preferences, is not transphobic, after all, not wanting to date black-haired people for example does not mean you think less of them, or only wanting to date japanese people does not mean you think they're the Masterrace. These people often argue that there are still differences between a person who was born as the gender that they represent as, and a person who was not, and that not wanting to deal with the extra baggage is a personal choice that also does not tell us anything about their opinion about trans individuals as members of our society.
So now that I've probably utterly misrepresented and angered both sides... what's your take?