And, no, I don't think it's practical for everyone and their grandma to "just set up a bastion"
There is a dramatic difference in effort between ( owning a device ) and ( owning a router, configuring network access to the device, then owning the device ).
Also psychologically: If I was a rock hard piece of shit and I knew I was at the doorstep of a personal device, I would treat it much more aggressively than a router. I suppose maybe that's just me and not the kids and enemy states.