Well, I’m no expert. I just enjoy learning languages and am a native Spanish speaker myself. With regards to the grammar I’m quit lost in my own language, but I can tell you this:
“le” is was and always has been neutral. It and the other examples I gave are just the basis that shows that Spanish is capable of implementing gender neutrality/equality.
I don’t know if you know any Spanish, but every single noun is already gendered. This is more about pronouns getting another third person singular pronoun, and also trying to expand the base of the language and noun or adjectives that are already gendered to include this gender neutrality + equality.
I hope I could answer your question properly, but of not, feel free to elaborate.