The reality of the political struggle is that gays are and have been oppressed, mistreated, abused, raped, labeled insane, labeled as dangerous, killed, maimed or criminalized for the "crime" which is not a crime, not to anyone with a decent sense of morality. Political messages need to be simple. "They are how they are and they do harm to no one." To try and pick apart a political slogan demanding equality and tolerance with a semantic argument as if it was a statement of biological fact betrays an intention.
Alan Turing, war hero, scientific hero & intellectual hero was convicted and chemically castrated for homosexuality. He was driven to suicide. One of many.
Sometimes in history there is a line and you can stand on one side of it or the other.