When it comes to including transgender people I think we do need to change our language in some cases, some people may not like the idea of the transgender community but it's now a fact of life, we older generation seem to have a problem adjusting to it but I look at it as we only have one life, we don't get to go round again and if someone isn't happy with who they are they have the right to change that, the fact we have the technology and the know how to do that now is life changing for a lot of people. If we have to change our language a little to accommodate that then so be it. I think its everyone human right to be happy and be who they really are and if we can help that process for them then we should. If needing to change something about myself to make me happy I'd do it just like if someone else needed to change themselves I'd do what I could to help them. This will never be a happy world until everyone is happy, my life isn't more important then someone else's. My grandkids are more adept at altering their language to accommodate others, they say "they" instead of " him or her" and I'm proud of my grandkids.
I've said before we can't destroy history because future generations won't know how we screwed up so will be doomed to repeat it. Maybe we should have our mistakes on display that way our children will see where we went wrong and hopefully do better then we did.