fiefdoms only work under specific material conditions. assuming we're referencing Europe, part of those conditions include cultural and economic isolation. even if the current global order collapsed violently, nobody is starting from scratch. especially for the first couple of generations, people will remember that there is a wide world out there. people now at least have been exposed to the idea of governing through consent and basic democratic principles. these guys are talking about putting shock collars on their body guards. they aren't going to be kings after the end of the world, they can't even imagine having loyal bodyguards