"Misogyny sort of requires an actual women being treated in a way a man would not have been treated."
This is fundamentally incorrect. One can be a misogynist (ie, exhibit misogyny) without any "actual" women being present. In much the same way as saying "i am attracted to my own gender" is to be homosexual (ie, exhibit homosexuality).
Misogyny sort of requires an actual women being treated in a way a man would not have been treated.
My best guess is that taking offence to this joke requires priming, driven by ideology, someone explicitly telling you that you should take offence out of principle.
The better jokes exposes our biased generalizations and makes you think though.