It's a good way to look at it as 'the bar'. Society is always adjusting the bar, and where it is can even be dependent on where you are, geographically. The same thing that has defined mental illness and stability is often in line with gender expectations.
What was once unacceptable is now acceptable, because those concerned, moved the bar in steps. Even those who wish it would move in one big step can see that it isn't going to be accepted that way. The gender bar is moving, in very small and steady steps, almost as if it is in a fluid constant motion, because of the gains made in the last couple years. It will continue to move through sheer momentum, as society has taken the leap from not possible to why not, even if they don't personally like it. Bigotry is hard to get rid of, but when a majority of people are on the opposite side of it, bigotry dissolves to almost nothing. Nobody wants to be on the losing side. Nobody wants to draw a battle line at this point, the scales are tipping.
So it should be in our personal lives as well. Small steps towards a goal of understanding. You can't change a mind by arguing, you only bring up the points of the argument when doing so. Take the small incremental steps that show to others and yourself, that things can be different.
Ativan