Yeah as much as tumblr irks me sometimes, it's really good at raising awareness for topics less talked about! Though it does seem to be mainly focused on trans and lesbian/gay stuff it's nice that pan, ace, and bi are acknowledged and that we aren't invalidated by majority of the userbase. (it's also really nice how people are encouraged question their gender identity and sexual orientation!)
As for my gender though, I'm bigender (More specifically androgynous and agender.). I prefer they/them but I don't mind she/her as it's what I'm used to. (I oddly enough prefer male titles like sir and mr. though haha) Some days I feel like an almost perfect split of male and female, other days I fall slightly more on the masculine or feminine side, and other days I feel more like a person than a gender.
It does kinda suck that the majority of the population isn't familiar with other gender identities but after there only being two widely accepted genders for so long, I think them being recognized and not put down completely in some communities is a huge step in the right direction! Hopefully in the future it'll be much more common for people to ask for others' pronouns since gender expression =/= gender identity and that the use of the gender neutral title, Mx, will be more widely used.
Woohoo another aro/ace! And I've heard of the term "akio" before. I'm actually surprised it's not more common
In more detail I'm a gray bi-quioromantic aro/ace. (I know, what a mouthful haha) Quioromantic doesn't have a widely agreed upon definition though most often, and in my case, means that I blur lines between friendship/platonic attraction and romantic attraction. I use aro in addition to this because I know in any future queerplatonic relationships I have or just any like intimate relationships in general I'd obviously be more than platonically attracted to them but not necessarily romantically (or sexually) attracted to them. The bi part's self explanatory and the gray part refers that I don't get that stronger attraction towards any and every person I have platonic attraction to. Because it usually takes a lengthy bit to explain everything in full, I usually stick to aro/ace for the sake of simplicity since it covers the more.. not more important but I know a good part of people probably don't care about my emotional attraction details haha.