Courage begets courage.

I do think this is the key thing. There are probably more people who don't believe this crap than who do, but the ones who do are more fervent. They have scared a portion of those who disagree from speaking up, and then another percentage of people think it's a side issue that doesn't matter much. It's sort of a scale from those who feel frustrated by a fear of social ostracism to those who are just trying to avoid conflict - who cares if it's true, let's not fight over it, kinda thing.

So what matters now is to make it clear that both a) it is important and does have serious consequences especially for women's and LGB rights, as well as many individuals' health and well-being; and b) there are plenty of people who agree on the basic facts at hand here, and we should all be speaking up more often in more places so that it's more evident to those nearby that it's a common, established, politically variable, simply fundamental position to hold. Anyone can say "there are two sexes" and "men cannot be women" - we've got to remind people those are ordinary things to be stating, and that we are not taking the nonsense seriously, by being clear about it whenever there's a chance.