To be fair, I feel like while we[normal, non-sexist people] use the word female often, but never really use it in a way that people are describing as offensive? I'm trying to wrap my head around it because this is the first time I'm hearing about this too, but people don't tend to actually call women females, like saying "Oh, I met a really nice female today," or "Check out that female, she's so gorgeous!" or whatnot, rather we use the term female as a descriptor relatively often, so it SEEMS like this would be absolutely ridiculous, but it might not be if people who actually do use female as an insulting term have already done the damage with using it as a noun.

That said, I think people are being silly assuming that using the word female in the way Jaden used it is always a bad thing/awkward. It seems fine to me, just an odd word choice-- there was nothing negative about it in connotation, so it kind of bugs me how people are getting up in arms.