Funny how it doesn’t work in reality.
The present federal government has co-opted the militia strategy and filled its ranks with the 2A absolutists, and given them a budget that rivals most countries' militaries.
I'd submit it's a violation of the 2A to allow the Nat Guard (essentially the continuation of those militias) to be forcibly nationalized (it took quite a bit of negotiating to get them all to join the fledgling continental army)
Anyhoo, tl;dr, for sure, 2A is an anachronism