There was a hierarchy of loyalties for a reason, exceed natural group numbers without it & it will go to shit.

Eh. I think you could make it work in excess of that number as long as your still at a point of I don’t know you but I do know 3 of your cousins. I think the biggest problem is people thinking it’s ok to forcibly take resources from others for their own safety. Paying the police and military and so forth. It might be necessary but no one wants to be the bad guy so they contort themselves mentally to come up with a way that they aren’t a thief and if anyone was killed resisting a murderer. Worse yet if they weren’t a trigger puller for the government or an elected official but just a voter they’re a coward who contracts their dirty work out by means of secret ballot on top of being a thief and murderer.

And yes. If you believe taxes are theft this is the only way to look at your neighbors who don’t or the ones who think it is but decide we have to do it anyway. Even if you shouldn’t say it because those people are the bulk of your society. Does it make them a bad person? Are you a bad person if you survive a plane crash, have no survival skills and break into a remote hunting cabin for shelter and food? Does it change if the cabin is occupied and the owner doesn’t want you there or to share his food so you get into a fight and kill him? How is that any different at scale when it’s a large collection of individuals doing it through the government?

Only if you give them a hierarchy to commandeer. Lone sociopaths are pretty harmless. Especially when they're up against a high tech Ancapistan with 30' walls, laser defenses and drone swarms.