Post-9/11 + post-internet, the idea of privacy is far different than the old definition. I doubt Millennials even rank privacy on the top 250 concerns. They don't even know what it really means. Their entire lives are overshared, collected, shared, and sold. I don't say that with cynicism, but matter of factly. It's not a value that they could actually hold dear, because we never afforded them that luxury and set of rights. This is the new world. They have congressional hearings on this stuff almost on a daily basis, and yet all those old codgers can't square what they grew up experiencing with the new way of doing things. They're stuck in quicksand, and the new world, with the Facebooks and web developers, are out there collecting our data, watching everything we do, and selling it all. Privacy is pretty much not a thing, nor a concern of that world. And imagine China further, with facial recognition, camera towers everywhere, watching what everyone does, where everyone is going, etc. So reading your emails? Or some 40 year old sharing your email, despite asking them not to share it?
"Please keep this between us. It is meant to be confidential." reads like this to them, "UIORWEKNLREMLASDOID DSOIJHNEEERMMMDSIOEEMO." It's not anything they can understand, and even if they could, the world in which they function doesn't allow for it.