Seeing the comments on this thread and blind in general, you can see why these initiatives are in place. You just get a cesspool of privileged racist and sexist dorks in the work place that will keep hiring only people like them
If you want to be gender fluid, good for you. Just don't make everyone learn a new vocabulary which you've convinced yourself that if the world doesn't bend to your will and reference you to your fancy that they're being intolerant or the intent is offense.
Reasonable people first look inside to solve problems because that's where they usually exist. No one is special in this universe.
Nobody would agree it's a good idea to call anyone 'douche' like that, so your strawman just broke down real fast...
Also you don't have the right to be happy. And there's no law requiring me to make you happy, nor visa-versa, for self-evident reasons. If someone makes you unhappy, and you believe it's not just yourself being too sensitive (it very well may be, try to consider that), feel free to avoid that person or have a gentle conversation with them as a reasonable person would do.
I guess you agree you should revoke your original statement because if someone, say you manager, constantly referred to you with something you find offensive and they know you find it offensive (like let's say calling you the wrong gender) then as you say "Nobody would agree its a good idea"
Using a "they" pronoun isn't new vocabulary. And if you meet someone and they say "hey when you refer to me, could you use 'they' pronouns?" You have a choice. You can respect their wishes or you can be rude.
It's always your prerogative to disregard what someone wants, but it's not a nice or respectful thing to do.