These idiots should just use the word "Latin", which has been a normal word for centuries, instead of creating newspeak. Cultural Marxism doesn't even attempt to fix anything; it simply complicates and distorts pedestrian matters in the ivory towers it has penetrated, confusing the very people they're trying to "help".
So, this is a linguistic trojan horse. There's no proper use case for the term "LatinX" except to normalize the pronoun/trans agenda in the Spanish-speaking world.