"his or her" is, in my opinion, just results from a bunch of whiny "but what about meeee" crap. it's a fucking pronoun. fight for wages and equality - is a pronoun really that important?
"zie/zhyr/sie/'j'/zis/etc" - not be an asshole, but... come the fuck on. i'm sorry that our language has evolved over thousands of years with certain cultural assumptions. but is fighting about a fucking pronoun really what you want to be using your energy on? if so, it's a free country (for now) so more power to you. just don't complain to me when you're blue in the face and official forms still don't have a option under gender for "other." at some point, you're going to have to accept who you are and accept that other people don't necessarily see it that way.