It's important to remember that only Western feminists aren't critical of Islam. An Arab feminist in Egypt for instance most likely would be.
I don't believe that feminists deep down crave "pure hierarchy". I do believe that they genuinely dislike it, but with Islam being a minority religion practised mostly by non-whites, their liberal white guilt prevents them from speaking out against it.
Certain feminists. Many Third wave feminists want "attention" from those who hold the keys to the kingdom. Many want want to chosen, but are not aesthetically attractive to the men that they want attention from. And now, you have many third wave feminists who say certain feminists are not truly down for the cause.
So, you have many of these women who keep trying to outdo the former, and keep pushing further out, not necessarily left. So what is happening is it is starting to become a "game" of who can outdo who. Whereas the feminists who are about women's education, healthcare, domestic abuse, pay, business ownership, are left out in the wind, and told that they are "not real feminists", and are holding "the cause" back.