I think I understand your point - it's true that the word 'sexism' has really broadened to describe a whole system of behavior that subjugates women throughout

I think I understand your point - it's true that the word 'sexism' has really broadened to describe a whole system of behavior that subjugates women throughout society - but it is a system of oppression, and so in order to address it substantially, we need some way to refer to it as a collection of behavior. An explanation is dangerously close to a justification - the distance between the two is not always apparent. I think that is what has driven some of the vehemence in other replies to your original comment. One might argue that an explanation does not even need to be made, as it is the default condition of male and female interaction - men are expected to behave disrespectfully, and women are expected to accept it in one way or another. I believe that we need to call out and address this behavior as much as possible, which is why I think the card system is great. If it's the norm, it needs to be changed. We can do more to address the intimidation that is felt by women almost every moment of every day - we can start with being conscious of it and seek to reduce it in our daily behavior.