This, in fact, is one of the major difficulties with DEI. My identity has no bearing on the truth or falsity of my words, my observations, or my statements. It is simply the truth that "LatinX" does not work in the Spanish language, it's effectively unpronounceable, and it is directly targeting a language feature from the perspective of English speakers as applied to a another language, which means that in so many ways it is insulting, offensive, and colonialistic. It should not require one to identify as Hispanic or Latino to say this (or to be aware of it). It feels intentionally racist, because anyone who purports to be representing the ideal of helping this community should surely be aware of such basic things about Hispanic culture and the Spanish language.
Not to mention all the other classism issues that said natives face at the hands of non-native learners/speakers, including accent discrimination when the others literally only use English phonemes.
And I'm not part of that language's native speaker group, I just recognise they should probably be included in stuff said about it, and try to respect what native speakers say, even if it's not how English works.