If SCOTUS has the power to “decide” what is and what is not Constitutional Then SCOTUS not the Constitution is the supreme law(err oligarchs) of the land.
Congress need not bother to presuppose amendment and ask for 3/4ths of the States to approve. They simply need to have the president hand pick judges that let them do whatever they want and mandate whatever they want with their supreme dictatorial power.
The Federal Constitution of 1787 is DEAD. The bounds of our union have in its place become repressive force.
As for the rest, the constitution has been ignored for FAR too long. Thats why we have to get off our comfy butts and go work to elect representatives that will roll back these unconstitutional measures. Otherwise the only remedy left to us is to replace this form of government.