Women don't have a choice as to whether we participate. It comes up everywhere. It comes up in our workplaces, and as the minority group in conversation, we have to be there to contradict the people who take it as justification for the (evidence-based) unlevel playing field in tech, sexism etc, and we will be the ones affected if we don't ensure that our colleagues and people we respect don't go therefore shrug and decide that everyone thinks that way.