I am not a native English speaker and I have sometimes referred to people as male and female (as that is what I have been taught) but I have received some backlash in some cases, especially for the word “female”, is there some negative thought in the word which I am unaware of?
I don’t know if this is the best place to ask, if it’s not appropriate I have no problem to delete it ^^
I’d say it’s off-putting for the same reason that using technically accurate biological terminology in place of sexy-talk can be off-putting. It could come off as impersonal or alien at best, and objectifying at worst.
Think of an alien in disguise saying “hello fellow humans”. Technically, it’s not wrong, it’s just weird.