Sure. Say someone believes vegans are right about everything, they donate and do activism for it, but they also consume animal products regularly. Is that person a vegan? I think most people would say no. I also think some people would say that persons activism would make more impact than their personal choices and is still a good thing. Still wouldn’t say that person is a vegan though. No ones saying you have to be alone forever, it’s not about you, it’s about women as a class would be better off if we did not actively participate in perpetuating patriarchy via marriage, children, domestic labor, etc. so same as you cant be a vegan and eat meat, you can’t be a radical feminist and marry men, or be pro prostitution, or be anti abortion, etc. but that’s just my opinion on things, I think the vegan activist who is not personally vegan is better than zero awareness at all and that person doesn’t need to become pure or whatever, it’s difficult or sometimes impossible to perfectly follow any ideology to the letter.