The relevance is neither the historical basis nor text restricts 2A to small arms, so why are we restricting the conversation to precisely their effectiveness?

>>...2A...

> But small arms in the context of modern government technological authoritarianism amounts to little more than a security blanket ...

I didn't mean to direct focus onto just small arms. The same dynamic applies with explosives, cannons, fighter jets, etc. For example, does having a ready-to-go tank in your back yard eliminate the problems with not getting a building permit?

The point is that focusing on weapons is futile when society is no longer ordered by overt force but rather economic/pragmatic attractors. In the western world the battle based on physical force has essentially been fought and won permanently - the result is democracy which is a similar dynamic without most of the violence. If a critical mass of people come together and want to change things, then that happens. The system has responded by dividing people into tribes and diverting them such that a critical mass opposed to the system itself doesn't actually happen.