The Constitution was not imperfect, but the President and the unelected oligarchs were.
Deep State/Swamp/whatever you want to call it was created in 1788 (John Adams Admin went almost went full totalitarian mode, hell even the Whiskey Rebellion made freedom loving people weep). Heck, I can make an argument Judicial review for and against via Article III’s obscurities and subjectivities. Constitution is extremely ambiguous which is why the document has been easily compromised. Enumeration is very weak for a reason because those who ratified the Constitution were just as divided as we are today.