Also a native speaker here. You can also just not specify "el/Ella" because the context isn't relevant. I.e. "es no binaria". You can also just pluralize the person to get around gendered wording, I.e. "ya llegaron" for "they have arrived" rather than "el/Ella ya llego" for he/she has arrived, but this is informal and may sound odd to someone of a different dialect from me, but I think this should at least be intelligible to Latin american Spanish dialects