Because their community is based on a singular trait and nothing else. It’d be like starting a community over having red hair. People have different lives in spite of that one unifying trait.The idea of the LGBT community having a unified stance on anything is an illusion. At least from my observation. Gay/trans people scattered in the real world. Representation comes from loud internet shut-ins and seedy places organized purely for hook ups.
There’s not much in-between for anyone else who doesn’t go for that. So widespread, critical discussions don’t happen.