The LBG Alliance specifically says that sex is more important than gender.
No it doesn't. It says that sexual attraction is important and should be respected by everyone.
That doesn't mean its more important than gender.
If you are trans and that's your identity, your sex is still important to your identity whether you admit it or not. Your trans identity is defined by your sex. You can not be trans without reference to your sex.
Even if you are trans you should still respect the boundaries of others and understand sexual attraction is different for different groups. Sexual attraction is different to respecting identity.
There are trans people who are attracted to the same sex and those who are attracted to a different sex.
But your trans status doesn't allow you to dictate who is attracted to you and what others will find attractive in you.
Homosexuality is about sex. It always will be. It's deeply human.
No one should be being pressured to go against their human desires and sexual preferences for the sake of political correctness.
Lesbians should be allowed to exclude males regardless of how they identify. This is OK to say. It should be respected. The fact its not says a lot.
Anyone who is trans should respect this desire and understand why its important.
I can not decide I'm gay if im female and trans. Nor can someone say they are lesbian if they are male and trans. You just can't be because of material reality. It might be hard at times but that's just the way it is. You can't always have what you want in life because you demand it and respecting others means you should be able to have personal sexual boundaries where you can say no.
It isn't a personal attack or slight on others to state your sexuality and personal boundaries. It is coercive control and abuse to force your identity on others against their sexual boundaries.
Respect for others needs to acknowledge that sex is material reality and doesn't disappear even if you wish it to. It still exists. We can try to respect people for who they are better in many situations but this does always require an acknowledgement that when it comes to intimacy you can not avoid sexual reality. Trying to do so, harms others.