Feminism as a social movement doesn't have "equal rights for women" as the goal of individual members. The goal is closer to something like "gain social status

Feminism as a social movement doesn't have "equal rights for women" as the goal of individual members. The goal is closer to something like "gain social status and prestige by fighting for the rights of women". In other words, achieving a particular state of the world isn't the central point: rather, it's a particular process of improving things for women. Consolidating things and entrenching a particular position doesn't visibly improve things for women, so there's no signalling benefit for doing it, so of course later prominent feminists don't do that. (Alternative explanation - consolidating the gains of feminism doesn't make any particular feminist prominent, so those who focus on that get marginalized from the movement).