I'm with Dr. rydrum on this one. Final Fantasy are Japanese cultural products. You can't just apply a western-originated approach to them.
I'm not saying you're wrong on the sexism issue - Japan's society is even worse and more backwards on the sexism front and that's something that should be dealt with. But it's going to take a closer look at other facets of Japanese culture and their influence on the FF games to get a bigger picture, rather than using an approach focusing on specific elements (ie portrayal of women in this case) in the same way you would with an american piece of media, to get a perspective of what exactly is going on.