It's ALL bullshit.

L = lesbian = archaic, redundant term; you already have G for "gay", and lesbians are nothing but gay females; giving them their own letter when males do not get one is blatant sexism; discard this term

G = gay = homosexual; should be H; discard this term

B = bisexual (bi = two = total admission that there are but two genders) = a homosexual who also indulges their natural biological urge to have intimacy with opposite sex; discard this term

T = transvestite; "transgender" is a made-up word for something that does not exist in objective, observable, shared reality; it is categorically impossible for XY chromosome individuals to change their sex chromosomes to XX in every cell of their body and thus become XX chromosome individuals; discard this term

Q = queer = vulgar slur never to be uttered in mixed company; like the N-word; discard this term

I = intersex = .004% of births are neither XX nor XY yet they think they get a letter - how about no; discard this term

A = asexual = no you're not, you're just involuntarily celibate; discard this term

P = pansexual = severe delusionary psychosis where subjects develop what they perceive as sexual attraction to inanimate objects, or to all objects; discard this term

+++ = placeholders for more letters they intend to jam down our throats and force us to willingly and obediently utter, as part of our ongoing gaslighting and subjugation; discard this term

Simply refuse to comply. Never, ever use these terms or letters, and they will all just go away eventually.