No, it is Democrats who have already killed liberal democracy by creating the Administrative State: government workers who aren't elected, can't be fired, and have the most control over how police forces and systems of coercion are used, far more control than the President, the Legislature, or the Judiciary. These un-elected bureaucrats can effectively create their own laws through rulemaking and lots of other informal ways of communicating with those whom they regulate. Trump is bringing this Administrative State back under the control of a democratically-elected position.