Realistically, using “man” in this context absolutely does carry a male defaultness to it because we don’t use a different term for “male post-person”.

I disagree, we don’t speak Latin either, but many of our current words are derived from Latin words, and those were introduced indirectly through French from the Norman invasion, but it’s not like we’re going to throw out all Latin roots because they no longer apply.

I’m fine with evolving our language, but I think it’s silly to just throw out etymology and historical context entirely.