In LGBT++ community, being asexual is seen as kinda a virtue.
There is this treatment of asexual people as if they are constantly having sex shoved down their throats by this sexnormative world, and that asexual people are precious little beans that can never sexually harass anyone, only get harassed by others. With all the talks about "consent" and "harassment", it is easy for asexuals to take the "innocent" stand.
Also feminists hate femininity, or despise it. They perceive feminine women as "confoming to patriarchy", and therefore as a trans woman, I conform to patriarchy simply by existing. Not only that, there is also a view by like, 100% of people that trans women just want to gain access to being women instead of actually being women. Like "man dressed up following into women's bathroom".
So I am basically a creep just by existing, in intersectionality's terms.
Also I experienced childhood sexual abuse, and also got told that I am "bad", "dangerous", "retarded", etc. This is due to neurodivergence, since I couldn't conform to society's rules. Combine the two, and I perceive myself as a sexual abuser. Since bullying by different people was common in my childhood, including victims themselves, I have it internalized that since I was sexually abused, there is also a high probability that I am a sexual abuser myself, when I respect consent and know that this is not true. But I need some kind of label, or a card so I can feel like a normal person instead of a creep. Being asexual gives exactly this, while being a transfeminine aromantic allosexual makes it worse.