I’d say a good-sized part of it is simply the American preference for watching beautiful, weathly people doing beautiful, wealthy people things. Hollywood rom-coms and US TV shows in general clearly skew towards upper middle class settings when compared to the equivalents from, say, the UK.
In other words, I reckon US media prefer their fictional characters to be aspirational whereas other cultures prefer theirs to be relatable.
Being a narcissistic, bloviating despot is exactly what everyone expected of Trump. In fact, he came off rather well from the time constraints, muted mics, and the total lack of fact-checking because the format of the debate didn’t expose his weaknesses like it did for Biden.