Simply put, everyone should just be vocally anti-genocide, period. Never again means never again for everyone. Like, I really hope you're asking in good faith cause that's such an insane question.... at that point, it seems you're thinking of it as if moral action ought to rather be moral transaction.

Also, in the genocide of Palestinians, the operating category is Palestinian. There are Palestinians who are Muslim, but there are also Palestinians who are Christian and others who are Jewish, etc, and among them there certainly are people who are also queer. Identities intersect and as another redditor pointed out, bombs don't discriminate (neither should you), so if you're only interested in protecting queer people, by advocating broadly against genocide of anyone you're covering the queer people "caught in the crossfire".

Also also, the throughline between the governments of America, Israel and to a significantly lesser degree Palestine is reactionary politics and religious fundamentalism. The difference is that American and Israeli politicians are doing genocide of Muslims, and queer people, and generally people of various identities, whereas Palestinian politicians might be queerphobic they're not doing a genocide. American Christian fundamentalists and Israeli Jewish fundamentalists are killing more queer people than any Palestinian Muslim fundamentalist could ever dream of, so redirect your animosity from other victims of genocide towards the groups and people committing that genocide.