You make a good point but I don't agree it's transphobia still.
We pick people to be around from a number of reasons. Usually because they make us feel good and have similar culture. This is why people of similar culture usually ends up living in the same places. This is why similar people become friends.
There are entire cities in Spain where only Nordic people live. And same thing in other countries. This is because they want to live near people with the same culture.
Trans people is something new and different, and it will take time before everyone is comfortable around them. This is not transphobia (irrational fear) or racism. This is human nature.
With time, it will become normal for people to have trans people around. But today it's unusual and people need to adapt to it.
I'm arguing that to make it easier to get to know Trans people, we have every opportunity here on Lemmy for example. If everyone remains friendly.
Indeed, that movie is actually scary! Like proper scary, not how most movies are.