So the President is just a puppet and hence it makes sense that you have a TV celebrity for a President?
Not at all. "Executive orders" work well as temporary laws for a lot of things, and the President controls appointees for major departments. The POTUS is far, far more powerful than the Founders actually intended. They just can't put new permanent laws on the books without getting Congress to go through the motions.
This is why, ultimately, Presidential candidates can make whatever promises they want, but they are always going to be beholden to whichever party controls Congress to actually get anything done.