My experience has been the other way around, actually. That a few years ago, it was still understood that not wanting to sleep with a trans doesn't make you transphobic, that this is just a matter of personal preference, and that after all, personal preference and consent should rule supreme in matters sexual. Which is the typical social justice creed, after all. Some people were already back then uncomfortable with the debate, that an extra point should be raised about trans people, but still, in my experience that was the rough consensus.
But nowadays, if you dare say you are not into penises, after all, you'll get cancelled as transphobic. "Concern for trans issues" has overridden all other concerns, i.e., the trans have made another issue all about themselves. I mean, the "Superstraight" thing may or may not have been started by a bunch of autists, but in theory, it even followed trans conception: Regarded MTF as female, regarded FTM as male, used the right pronouns, recognized "non-binaries", and in general just followed what the trans movement has told us for decades, that there is a difference between sex and gender. In theory, that should have been entirely compatible with progressive thought... but of course, it got immediately cancelled.
Everything has to be about the transes, everything has to be about feeding their gender delusions, that overrides all other concerns.