That point is trivial.
Its supporters say the Constitution protects us from overreaching government, which is absurd. The Weimar Republic probably had some form of constitution that didn’t stop Hitler; England definitely had a constitution which didn’t stop Oliver Cromwell from becoming a dictator. It fails at what it’s supposed to do.
It has, however, been used to silence state propositions (the most democratic, freedom-laced mechanism in the US). It’s also been used to destroy long-standing religious monuments in town parks which were loved by the townspeople.
How could anyone still think we need the militia clause? After seeing what “well-regulated militias” coming to power gets you from 20th century Europe or modern day Arab countries. All people need for self defense are pistols and shotguns, not assault rifles.