He yearns to be an autocrat, dictator, and tyrant, but this yearning nor its fulfillment will ever make him a king. Kingship is a sacred trust, a sacred role of “first servant of the people.” Kingship should never be stripped down to merely its political element — it has always been a religious position also. However corny or disingenuous or outdated it may sound to the modern ear, a king has a supreme duty to both Almighty God and the people alike. Whatever Trump’s political title, he remains a staunch nihilist and roundly anti-Christian figure. He has a bad attitude, he cuts others down, he behaves crudely. He does not gather consensus, he does not study, he does not reflect. He has never put anyone’s needs before his own gross desires. Even if 100% of Americans wanted him king, and even if the Constitution were changed to name him so, he will never be a king. He will never care enough about others, will never be capable of the self-abnegation it takes to be a real leader. He will never have the humility to go before God as a servant. And he certainly will never have the discipline, earnestness, purity, honor, or even simply, the guts, to do God’s work on Earth. He is the worst kind of rich kid, a brat, a scoundrel, a gangster, a thief. There is literally nothing kingly about him.
Your point is well-taken, but the terminology deserves more than Americans and other republican traditions tend to give it.