I am aware. I made the same point as you before. This is an innate flaw in our constitution IMO.
This is not a flaw at all. Constitutional amendments were intended to be few and far between. Most federal issues simply need an Act of Congress to be dealt with. The states were intended to have to most governing power. The federal government is supposed to only have limited, delegated powers under the 10th Amendment. Requiring a test wouldn't even be allowed in state elections because of the history of using such tests to disenfranchise black people, thus the resulting legislation and court decisions striking them down. You sound like an extremist when you talk about these things.