Specifically to a not!Unitedstatesian American such as myself the crass attempt to actively not be Obama in as many ways as possible was the strongest thing.Its less about the food and more about the man and the setting. It's the Republican POTUS posing as Ronald McDonald, a literal clown, under a painting of a pensive Abraham Lincoln, the undisputed greatest Republican POTUS.
The image is an iconic snapshot symbolizing a sliver of what was wrong with Trump. "Making fun of food" isn't nearly the point.
As for the rest, well, Gori's been more articulate than I have, especially about the strong personalist element (as I've said many times, you finally had a South American-style despot, if you want examples I can give them) and Farm Boy keeps digging himself deeper.