When one argues insurrectionist theory as the sole basis for the right expressed in the amendment, it naturally raises the question of whether such a right is needed given the current form of government.
Whatever defects the Heller
ruling may have contained, it was solid on one thing. The 2nd Amendment protects the right to self-defense
The exercise of that right can apply to protection from criminals, foreign aggressors, or in the worst case, against agents of a tyrannical government. If one argues solely along insurrectionist lines, they're not only scaring folks, they're missing the central argument of the RKBA.