how do they pronounce it? “latinequis?” I haven’t heard -u but I’ll take your word for it.

Using “themselves” for a non-binary person or unspecified gender is grammatically incorrect.

It’s “themself.” (Unless they’re plural.)

Also, “Latinx” is performative white ally cringe. It’s not pronounceable in Spanish. Use “Latine.” -e is the obvious gender neutral ending.