Nonsense. You simply refuse to accept your definition of feminism is no longer applicable. You might as well be arguing the term "gay" doesn't REALLY have anything to do with homosexuality.
You can flounce and hold your breath all you want, but your insistence doesn't change colloquial usage. Whether or not the term has been coopted or not is irrelevant. It has a specific meaning in popular culture NOW.
and that is where your argument falls apart, it is not my definition at all. It is the field of sociology and the dictionary definition. So if you have a problem I suggest you write a white paper with your hypothesis and we can see if that survives peer review (which i doubt). In the meantime we use the definitions that exists. Not the ones we WISH to exist.