Women are not children. We are not fragile little birds who can't cope with jokes, works of art, or controversial speakers.
I'm concerned that boys have become politically incorrect, that we are a society in the process of turning against its male children.
I think it's ill-advised to attribute pathologies to healthy people. It doesn't help normal, healthy, thriving children to be viewed as pitiable and fragile.
Any child may go through periods during which they become less outspoken with their parents or teachers. But girls, like boys, live in many different worlds - they have their friends and their classroom and their parents - and within these different domains, they may have different levels of expressiveness.