One more thing I might add regarding my previous post about how salutations might change in the future to address each individual's self-described and unique pronouns. If pronoun usage evolves to be regarded as truly subjective in origin, then gender will become meaningless (biological sex will remain unchanged as biologically pertinent) That doesn't mean unlimited genders will be meaningless to each person, but it would be meaningless to anyone else.
The following example is not intended to demean the gender issue; it's meant to illustrate what I mean:
Person A: "I really like stuffed animals and in particular I really like stuffed animal frogs. In fact, they're among the most important things to me. I think of myself as a frog-sapien to the point that I identify as a frog-sapien. I'd like you to refer to me as a frog-sapien."
Person B: "Ok. Identifying as a "frog-sapien" (a term you've coined for yourself) might mean a great deal to you and I will honor your wish to be referred to as a "frog-sapien"; however, know that "frog-sapien" means nothing to me and as such I don't care a lick about it. The way you choose to identify based on a term that you've made up for yourself is meaningless to me."
Person A: "Ok, but see now I'm offended because you're not adopting the same level of meaning and importance to how I choose to refer to myself (and want others to refer to me as) as I do.
Reality: People don't care about our own specific cares as much as we do for ourselves. Expecting that they do is an exercise in futility and is also an unjustifiable expectation. It's over-stepping boundaries.