Philip, the LGB Alliance is a group of ordinary lesbian, gay and bisexual people who feel they have been abandoned by Stonewall in its rush to adopt transgender ideology without consulting its core constituents.
Transgender ideology is homophobic. It says that a man with a penis can self-identify as a woman and then legitimately expect to have sex with lesbians — and that lesbians who say no are transphobic.
LGB people are united by their experience of homophobia. They have very little in common with Transgender people. Transgender people have exactly the same rights as you and me. That wasn't true for LGB people who for years couldn't marry and didn't have the right to be served in shops or accommodated in hotels. I urge you to read the relatively limited statements the LGB Alliance have issued and find a single thing that could be described as hate.
By agreeing with someone who's called them a hate group you've just slid over to the wrong side of history. I for one will never hear your name again without thinking, 'Ah, yes, Philip Pullman who said a group of lesbian, gay and bi people fighting homophobia was a hate group.'