The purpose of Government is to prevent evil. Obviously, Constitutionally guaranteed or not, to get a driver's license, you need to show basic safe operation and proficiency. Anything less creates loss of life. Unintentionally killing someone with a car is just as dumb as doing the same with a firearm. If you can't drive, don't be on the street. If you can't shoot safely, don't bring a gun around me.
RKBA? Yes, absolutely, until it infringes on my basic right to breathe air. YOUR rights do not supercede mine. WE have to have some compromise in which to coexist peacefully. I have to demonstrate safe gun handling so that you won't get killed accidentally.
MO requires a shooting test. Locally, the only ones to fail were an older woman who didn't have enough hand strength to pull the trigger, and a older man who constantly adjusted his hearing protection with gun in hand and finger on the trigger. As my son would say - Epic Failure.
I agree any certification can be misused to exclude certain groups - but to disempower a group takes their willing participation. We saw the end of Apartheid in America in the '60's, and CCW has gone from "The Few, The Proud" to 48 state acceptance. It was done by hiring legislators who understood what the citizen wanted, not selling our birthright for pottage.
If anything, I fear some Americans will do exactly that, again, as they did in the '30's. I'm not worried about the shooting test, I passed it not having been on a range in five years, on 4 hours sleep. Some people there had been practicing for weeks and barely kept it in the black. A shooting test really means your state government is considerate enough of you to hold your neighbor to a standard for your protection, and theirs, too.