I just want to add in that historically, monarchs never came anywhere close to possessing the amount of power that the President of the United States of America has.
Most monarchs were not tyrants. The number of monarchs throughout all of history is astronomical. Very few were tyrants. Hitler, Stalin, Mussolini, these people were not monarchs. Most of them somehow arose to power in republics, not monarchies.
It was always top priority for a monarch to ensure the happiness, loyalty, and support of his governed. It was much easier to overthrow a regime back then than it ever would be to overthrow a modern Federal Government such as that of America. People were not really subject to the crown on a physical level. The crown had little power by today’s standards, and if the people weren’t satisfied, the king’s head would be on a platter shortly. People also enjoyed more freedom than we like to give history credit for. In the good ol USA, we are simply brain washed to believe that monarchs are Satan, and that there was no such thing as freedom or liberty until George Washington woke up one day, called up his buddies on his iPhone, and decided that there shouldn’t be kings or popes anymore.