The founders wrote a constitution for a people that were generally moral and just. They well knew the historical progression of republics into decay and tyranny. And they provided methods for the people to work around a tyrannical government. As I recall George Mason insisted on Article Five to provide us a peaceful way to right the ship of state. Is there recourse to correct our present problems in the existing constitution? Yes. BUT it will not be used. The marxists in congress have more than enough numbers to prevent any correction. For instance, there will never be impeachment of judges that violate their oath of office. Nor will congress eliminate the chairs of offending judges. The marxists in congress will protect them. And we will not replace them because they lie straight to our faces and they have rigged elections with gerrymandering and voter fraud. There is no other way except rebellion. And no one wants that.
You are correct, the Constitution as written by the Founders was for people who were generally moral and just, to allow the Constitution to be fiddled with by people today who generally are not moral and just is simply lunacy.