Here is my opinion on it for whatever it is worth
Gay guys usually like guys, they like the smell of guys, the look of guys, the frame, the voice whatever.... most Gay Guys have no interested in a tgirl as she looks feminine, acts feminine, prefers straight guys and is totally waht they are not interested in. I am not saying all gay guys and I am not saying all tgirls, but I think the majority of Gay Guys want guys that looks like guys and the majority of Tgirls want Guys that act and consider themselves straight.
Remember most tgirls believe they are in the wrong body, they believe in their heart they are girls and that is why they take these steps to begin with, whether you agree with that is up to you but calling a Tgirl a dude or a guy will give you a quick shot to the head I would think.
There is no doubt about it the girl cock is an attraction for those that like tgirls, does that mean your gay? well it means you like cock that is for sure and you also like the feminine form, perhaps if anything you are rocking the bisexual side of things... I have zero interest in guys, I like girls and tgirls, in fact I find tgirls even more sexual then girls most of the time. Girls spend all their time trying to fit into a man society as equals perhaps they have lost some of the sexuality we so desire. Guys are visual creatures to start, when we see a hot girl or tgirl we cant help desire it, some will resist the tgirl and others will dive right in, it is a personal choice.
To finish off the rambling the tough part is Western Society. They are very closed minded in a "3rd Gender" as one may call it. They are getting better but are far off from Asian and European countries. You will find that your friends, family, strangers many of them will assume you are gay right out of the gate if you say you like Tgirls, probably cause they first picture a football player with a wig and a dress and dont really understand the mentality of it. Personally only a few close friends i know that could handle it know about my desires, not everyone is open minded and even those that might love tgirls in a private life might be negative to you in public as to keep their own desires even more private.
anyway that is my 2 cents, agree with it, hate it, whatever... I was not trying to offend anyone just in case someone thinks that..personally i think it is cool for people to do whatever they so desire as long as it doesnt hurt anyone or of course if it doesnt involve the young... some lines should never be crossed.
cheers