Outrage culture is getting reaaal old about now.
"Nice game you've got there. It would be a shame if someone came along and called you transphobic."
Please, please don't cave to this ridiculous request, as it is only the beginning. They're just feeling you out right now. These people are not noble champions of much of anything, and the backgrounds of e.g. the two Twitter-people trying to initially stir this up are... Well. Extensive and verifiable if anyone is actually wondering whether engaging with / catering to them is a good idea.
Have to say, when I saw the backer text in game the other day, "transgender" is not a word that ever went through my mind, nor did I think "shame" had anything to do with the (over)reaction of the person who, in my reading by accident in his shocked state, fell off a cliff. Then again I am but a simple-minded barbarian far, far from the recently self-proclaimed cultural and moral mecca around the San Fransisco Bay Area...
Thank you for a masterpiece of a game, and I beg you - don't tarnish it or yourself by engaging in this garbage.