They don't "require photos of woman", passport-style portrait photos are standard period. It's really no different from LinkedIn being the standard in Western countries where you're suspicious if you don't have a personal photo on your profile and where you can just as easily be discriminated against based on your looks or whatever other criteria you can think of. The only difference is that they'll use euphemisms or outright bullshit you, if they even bother getting back to you about your application.