The fact that it's an evenly split partisan issue with only 0.5% of the population being trans means that you have A LOT of cis allies. Like, statistically, you're more likely to meet several dozens of understanding people than another trans person unless you actively limit your exposure of non-trans people.
There are probably some (not many but some) trans people who conform to binary gender identity beliefs, too, they simply want to be the other gender.