Thesis: The executive branch is becoming too powerful.
Antithesis: If that ever happened, the white-collar desk jockeys at the IRS would rise in revolt against authoritarianism.
Synthesis: Democracies cannot be authoritarian as long as they pass the 
test.
That’s not even a loophole. The Constitution is purposefully amendable (as any constitution should be), which inherently means the system of governance is amendable (again as any constitution should be).