I dunno, mine certainly does. My family extends only to where they're no longer toxic in my life. When they intrude and become a negative influence, I cut them out.
My gripe with the antagonistic "work is not your family" approach is it sends the signal that the people I meet at work will never be my family. That kind of sucks. Sure, corporations cutting people out aren't very familial, but there are other humans at the core and some of those coworkers do care if I get fired or am having personal issues. Unilaterally casting them out as a machine to further my personal interests is throwing the baby out with the bathwater.