It's a physically demanding job, involving heavy lifting, reaching for things in high places,being on your feet for 99% of your shift, running around, working in conditions that are hot, sweaty, dirty & stressful. You need a voice loud enough to cut through the constant din of a busy kitchen (and be willing to use it) Sometimes it can be rude & crude, but the one's who succeed give as good as they get. They cannot afford to suffer screw-ups gladly, so it can be mean & nasty cause there's no time to have a sensitive chat about how badly you went wrong. A customer is out there waiting....
Some women just can't meet the requirements. Neither can some men, for that matter. It's not a job for the faint of heart.