We do have enough agency to tell you that we don't like the things that you consider "flirting" and that we consider that creepy. Feminist are women using that agency. Yet, you hate them for using their agency to tell men like you that we don't like what you are doing and to avoid men like you. He is repeating what we said in an attempt for you to listen, since you obviously ignore what women say. And probably, not because he is a "white knight", but because he doesn't want to be associated with your ideas.
Hell, apparently some women are using their agency to ask for restraining orders, which is a very, very clear message that they didn't liked at all what the man who get the restraining order did.
So if we are using our agency to try for what you call "flirting" but we consider creepy to stop, well, the message is clear: We don't like it, we want it to stop.
Sorry, you don't get to say that you respect our agency while actively ignoring it.