Spanish speaker here. It’s kinda an ongoing issue. Non binary people in most of South America did already used that as solution problem is that Spanish is used with generes for a lot of things even objects that do not really have a gender.
So as a start it sounds weird and sometimes you have to do a double take to understand what was said. Another issue is that gramatically there are words that end in e and are gendered for man ex: “Presidente” is used for male president and “Presidenta” for female president. Admittedly those are few cases and some argue that they where originally non gendered or are loan words that are non gendered. But still it’s not resolved Now this next point is mostly my observation you can take it as you’d like, the community handled this awkwardly and it kinda became a fad from 2014 now somehow out of taste for some. Some tried to impose it onto everyone as the.morally correct choice, and some seemed to use it as a form of rebel, I.think it was very badly received as a whole. My obvservations ending there reality is that there’s very little open discussion about it like it was a fad (also right wing government winning in 2015 doesn’t help) but non binary people is still very much there and still no better understood.
Right now seems that the genderless e use is still used as “an inside dialect” for some but when interacting with people outside of the queer comunity they go with old gender rules. Some others do use pronouns and gender alternatively. But definitely there is no consensus and little open talk.