Thanks for this. I’m going to be more aware of these kind of things and more watchful to make sure I don’t contribute to this myself and more observant of those around me. Now, I have a question for the women here — sometimes I’ll hear a woman make the joke about belonging in the kitchen. Do you have insight into why that might happen sometimes and what the best sort of response would be?
To know "what the best sort of the response would be," you'd have to know a lot about the person you're talking to and how they'll respond to your unsolicited advice, and no one on HN is going to be able to grant you that.
But then, I'm not too sympathetic to what strikes me as an arrogant desire to transform the primitive worldview of a thinking adult with your wet blanket nostrums. By all means intervene if someone's being demeaning to another person, but in the case of a woman making a kitchen joke, I doubt you're dealing with a neanderthal waiting to be shaken into the 21st century by sobering thoughts about how retrograde it is to even joke about such things.
Emotional fragility has got to be at an all-time high these days.