I don’t know who came up with this, but I cannot disagree with it:
Democracy is two wolves and a sheep deciding on what to have for dinner.
A representative republic is 5000 wolves and 4000 sheep voting 5 wolves and 4 sheep into office to decide what to have for dinner.
A constitutional republic is a similar situation but with a constitution saying that lamb cannot be for dinner, with a Supreme Court of 5 wolves voting against 4 sheep to determine that mutton is not lamb.
Government has no real restraints in reality.