Now that is a very interesting idea, I’ve never heard anyone claim that militias are independent private armies not subject to government control. The militia exists purely for the government to mobilize in times of disaster or war, be it state or federal, as outlined in Title 10 Chapter 12 of the US Code. The National Guard and Naval militia are the standing, organized militia. All able bodied men age 17 to 45 are considered part of the unorganized militia, and subject to being called upon by the government through selective service. All or nearly all 50 states have explicit laws banning private citizen militias and/or paramilitary organizations, which as been affirmed at least twice by the supreme court and as recently as 2008. Any overthrow of the government that no longer is of and by the people would be carried out by the people in general, not a militia or any defined organization.
I think I see your point one constitutionality vs legality, though I would say that all law stems from the powers granted by the constitution and thus are intrinsically linked. If something is enumerated in the constitution, it does not fall to the states to manage in my opinion, as the states only get the “everything not outlined” to legislate in my opinion.
I appreciate your viewpoint on this, thank you for engaging with me on this topic. I may fundamentally disagree with your conclusions, but I can see where you’re coming from now I think and this has been very enlightening.