(Well, if we're going to be practical carbon copies of ourselves...; see
trannyfag)
Transdyke is only a deragatory word if someone doesn't want it applied to them; the same as the word
dyke. That is, one probably shouldn't use it to label other people without their permission, but lots of people use it to label themselves, in which case it is not
deragatory, but the reclaiming of a word that was once used against them (much like
dyke in general - and in this case that's the reclaimed word since transdyke was never a popular insult for
gynephilic MTFs, as far as I know, -
nigger, etc.)
Also,
sexual orientation identity is not necessarily dependant on the person's
gender identity; in fact, it only need be if one identifies with the classical sense of
homosexual and
heterosexual.
Bisexual,
asexual,
pansexual, polysexual,
intellectsexual, queersexual, etc. (as much as your mind can come up with) people can be any gender.
Rather than professing to be the
one true deacon of the
Transgender Englightenment(tm) and laying down
the rules, perhaps we could take the experiences of each person as valid.