@RadLola You're wrong, sexologists (the purpose of sexology is to construct and control people's sexuality, so they're not scientists or pro-women in any way) were the first to insist that homosexuality is a biological defect/quirk because they couldn't understand how anyone would resist their brainwashing. Lesbian and gay liberation used to see this as offensive and sexualizing. LGB you describe was the group of mostly gays and some lesbians who decided to make a pact with the patriarchy/capitalism instead of fighting it.
What you say is still built on a premise that being able to feel attraction and who you're attracted to are inseparable, one. Therefore if people form/have one or the other orientation, this preference is biological because they can't eradicate their ability to feel sexual desire entirely. Well nobody can.