Read her letter again. She seems perplexed that others couldn't understand the larger point she said (after the fact) she was trying to make about racism. That's what people always say when they're caught and publicly sanctioned for doing something they know to be wrong.

As for moralism not addressing the material bases of exploitation, well, that's false. Exploitation is a central facet of morality and is principally defined in material terms, e.g., slavery and human trafficking. And the term "weaponizing" is hyperbole and meaningless. There's greater awareness about the corrosive effects of racism and sexism; that's beneficial to society.  

Studies have shown men and women define pornography differently, so you're projecting one male's view of pornography that isn't supported by research; neither is your claim of "beneficial effect". Healthy sexuality is beneficial. And the fact that women make money from pornography isn't evidence that sexism doesn't exist or isn't harmful.