I won't get into the rest of the stuff in this thread, but I'll disagree with your first point.

Feminism is a word. An English word. And that means it's definition is driven by common usage not a book. If the common usage shifts to a toxic place, the meaning shifts with it.

If you disagree I'd love to hear your gymnastics around the word invcel, it's evolution into incel, and then that further extension to femcel (even though the person who coined invcel was a woman).