Where/are you hand on your heart just as upset and emotional during/about the decades when EVERY paid-for cadet scheme was 100% restricted to males? Because if not, you should not use the D-word. At all.
Its a private fund that chooses to target their private means at a rather limited group of people (very few people in professional flight training are women). I get that technically, you may call that discrimination but in factual context, it’s not something that will set you at a mentionable disadvantage.