Feminists are an invasive species. Let one in, and they'll rapidly push everyone and everything else out. Be very careful what sort of women you invite into your social and interest groups.
It's not an accident that the Nebula Awards are 100 percent female, or that the SF-SJWs aren't content with that. One might as well expect zebra mussels to decide that they don't need to expand into yet another lake.
Feminists are the zebra mussels of Western Civilization.