You're not the only one who speak from experience I too have experience in internet dating and from observations and as well as experience it's very RARE that someone will pack up their entire life and relocate for love!
For the sake of argument let's say that two people connect from different states and happen to like each other, do you honestly think these men are completely abstinent before and between visits?
If someone's only exposure to trans women has been as a sex object (porn, etc.) then their brain has never been trained to think about them as anything else.