It seems to me that in the areas we are the same you object to discrimination. A girl can be a pilot just as well as a bloke, in some situations she will make a better pilot than a bloke. Discriminations in these circumstances is born out of ignorance, like any other discrimination. What's to not understand?
When I was a lad being called "discriminating" was a compliment. It meant one had the ability to sort the wheat from the chaff. These days choosing the best option is not politically acceptable, whether it be gender, education, employment, whatever.