What he, and others like him, seem to neglect is “What if the disaster makes leaving the house as part of survival ?”
Lemme tell you. Week 2 of the disaster, if I see a hint that they have what I need, I’ll camp out there for weeks or months following to take it. I can take that house, regardless of the security.
I think that a mobile survival plan is still best.
Mobile is the desperate last resort. Those that stay put get to keep all their stuff. That can be tough in tsunami or wildfire areas.
Concertina is silly, anyone can cut through that — I guess it could be used to slow people down so they don’t hit you from all sides at once?
My bug out bag is ready