On the one hand, emphatically yes - when talking about How To Interact with people of X gender, people tend to make a lot of generalizations.

On the other, feminist scripts seem to be against didactically learning social rules to an extreme extent - instead of pointing out "Hey, this thing works on maybe three out of four women, referring to that subset as 'women' makes you believe less in the other one-quarter," they go the entirely opposite direction and say that learning any rule, ever, is wrong and misleading and Evil. I dislike this, and while your comment is clearly not being this, it can easily be read as it by someone with experience interacting with those scripts.