The fundamental unity of porn?

Female and male porn are equally exploitative, but only one of the two kinds is socially acceptable. It's even acceptable in Church.  Is this true?  If so, why is it tolerated?  Even praised?

WALTER HUDSON: The Twilight saga is just porn for women. “Pornography imagines that women exist for the sole purpose of satisfying men. The women in porn are not only willing, but eager. They are depicted as if satisfying a man is the means by which their own life is sustained. This is without the slightest pretense, explanation, or justification. The unconditional nature of the attraction is essential to the fantasy. So it is in Twilight, only with the roles reversed. Edward Cullen and Jacob Black adore Bella, not due to any apparent merit, but simply because she is there.”