For one, without reading the full thing I may agree with the headline. If you're a Constitutional Monarchist who thinks having the head of state be a symbolic figurehead with no real power or capacity to intervene in politics I may not disagree with you.
The US could elect Trump as king and let him spend his days waving at crowds and attending weddings, maybe doing the jerk-dance in receptions with other monarchs. A remarkable number of democracies operate this way and do alright. Certainly better than letting him run any country for real.
You're taking the joke a bit too seriously. But hey, in any case it doesn't seem like he's struggling on that department. I haven't seen so much media attention devoted to unbearably annoying ramblings applied to a monarch. They mostly just sit in the corner and try to avoid reminding people that ceremonial dynastic positions are an anachronism.