Honestly, I did not know that Feminists consider their beliefs to be a religion. However, to answer the question, here in the US, for a religion to be recognized and provided religious protection requires the Government to acknowledge a particular movement as such. At least, this is my understanding.
Some feminist would argue that the vagina is all powerful---and from my experience with it, I have to say that statement is true.
However, The last thing we need is some High Goddess dictating what we can and cannot do, taking our money away for her "needs" and........I'm sorry, that already happens to married men even in the absence of feminism!!