Main confusions with gender are because gender was alway a synonymous to sex. And in majority of languages there no separate word for "gender" and only words for biological sex. So for non-native English speaker, or to people grown up in different cultures, the whole idea of gender at all is very weird, and many countries are not even recognizing the differences in translations (for example, in Istanbul Convention there stated "gender" and "sex" as different words with different meanings, but in ukrainian translations of that, they both were translated as "biological sex" until recently, so our politicians were not able to spot what can be wrong with Convention).

This means that majority of non-native English speakers, who are not really aware about TRA wars, would consider gender as something synonymous or very close to biological sex, and translate both words as "biological sex".

And in gendered languages neo-pronouns makes no sense as well, because every word is gendered, not pronoun. So to add new pronoun, half of words must be changed, what can take years for every pronoun.