This frequency of English localization issues is unacceptable

[Teraq]

Also the French version despite copying the JPN often has made its own bizarre deviations, like making Mitron a women which was very confusing for folks over there.

Objectively the best thing the FR localisation team has ever done, ftfy

As someone who is actually a folk over there, source on "very confusing"? Personally I didn't feel very confused, merely validated. This is only a one-time thing anyway, it is only Cylva who uses a female pronoun, and Cylva knew Mitron a hundred years ago – he's gendered male as you meet him in Eden. It's not exactly surprising an Ascian would choose to possess bodies of different genders, especially one who has a female name and a boss appearance based on said goddess. Consider Loghrif also initially being taken aback by his current appearance. I know Altbion even asked if this was a mistake over on the FR forum, and they replied it wasn't.

(The fact that both Endwalker's English and French scripts pointedly obfuscated Ancient Mitron's gender is also ... interesting.)

This little tidbit doesn't make the meaning vaguer or takes away from the Japanese like the English blunders here; it just adds its little spin and subtly whispers Trans Rights at you without taking away anything. Mitron as you see him in Eden is still male-gendered, and their Ancient self's gender is still perfectly unknown. French only adds that Cylva probably saw them in a female form once and she went with that.