Definitely ruptured. Ties are loose, allegiances nominal. The relationships of between family members, when conducted by email, do not provide the same function - they lack the capacity for deep, biological connection. And don't forget that we are made of meat.
The modern American family, as an organization, produces offspring well-developed to contribute in other environments, working for other organizations. The family that spawned them, however, does not receive the benefit of the child's labor; we encourage young Americans to estrange themselves in order to "strike out on their own." This, I think, is what Robert means when he says families lack "the necessary consumption" of offspring's efforts. Parents pay heavy fees and dedicate years to build productive, hard-working Americans who then go and feed corporate machines, governmental coffers, etc.
That was a loaded sentence; the family is an excellent production unit operating in the service of society. I don't think, however, that society is rewarding the family for its dedication. Where are the family's returns? And the family, therefore, is a selfless -- and poor -- investment.
Some exceptions apply: I visit my mother in person frequently, and many families do bring their offspring back into the fold after a period of college, job-seeking, financial/social establishment or other such Rumspringa. I and while I believe that families who produce valuable members of society deserve to benefit directly from their labors, I also have a strong understanding that tying a young person down with forced dedication to a family, to a family's religion, religious community, or secular community, can severely cripple the offspring's innovative potential, her desire to succeed and/or her productive capabilities for that community/family. There is a reason the Amish send their offspring into our world with a pocketful of cash and no strings attached - they come back with a desire to see strengthen the Amish community, or they don't come back at all. Those are the only two legitimate options, in my opinion; families shouldn't trap externally ambitious offspring, but rather cultivate that ambition so that it feeds back into the family.
The best way to do feed offspring's efforts into families, I think, is by plugging the family into a larger local community - churches do an excellent job of this - and plug the offspring's ambitions into that community. Whether it's local (small) business, local government, "community organizing," whatever, the stronger the local community the faster the offspring are drawn to support it, and its familial units.