Isn't this just an abstraction on living in your parent's basement? I don't believe that most newish techies have parents with spare, vacant homes ready to go.
Most homes here in the Bay Area don't have basements.
This is the root of the problem.
If your direct parents are to blame then sure... but when people complain about "boomers" ruining everything, they probably only think about the wealthy ones, which means your parents might not be one of them.