Dummy Orc's first words regarding her are specifically "lowly bloodline", and "no last name". Common woman traits..

The random orcs say "she's good for a lowly human", and "she's good for a commoner".

Her gender is only used to refer to her. i.e "red haired girl", "red haired swordswoman" and, beleive it or not.... "she" and "her".

And never in a negative way either, nothing like "puny woman can't beat orc SMORC", instead, when they refer to her in a negative way, they use "human" (like the spectator orcs booing her for being a human)

And finally, in the comment I'm replying to, you provide arguments for why they discriminate specifically against humans and commoners, not women. They accept Aren and Ilya for being Swordmasters, a.k.a literally top of the world level fighters, and accept blue hair boy whose name I forgot out of respect for the hero or whatever. Nothing to do with them being men (I mean Ilya is right there, didn't even notice till I typed this). Judith being a random noble probably wouldn't change their opinion of her, but that has nothing to do with her gender.

If you refuse to beleive me, go reread the chapters, but replace references to Judith with male pronouns, and see for yourself that nothing changes.

Maybe also try to analyse your thought process, to see why you reached the conclusion that the orcs are being sexist, despite nothing in the text itself implying so.