I don't think it matters for a lot of the paint-self-into-dysphoric-corner types who insist on the they/them because anything else is triggering.
FWIW, whether the language being used has gendered pronouns (e.g. he, she) or grammatical gender (e.g. la lune, le fromage.) does not appear to bear any statistical correlation to troon-out rates. Anecdotally speaking, countries that use languages that have little to no gender grammatically (Turkic, Japanese) seem to have more rigid ideas about gender conformity than those that are (Finnish, French for example).
I guess being taught from a young age that tables, chairs, the moon and cheese have seemingly arbitrarily assigned gender helps you shrug it off if a man in a dress demands to be called ma'am or a woman in a short haircut screeches about being the man.