Earlier quoted context omitted.
Fetishizing the founders and imagining that current times are playing out as they intended makes no sense. In less than 100 years the system they set up resulted in civil war. They aren't smarter than us and they don't know anything about the present. I don't care what the founders thought nor what people today imagine they would think.
Benjamin Franklin at least was smarter than the vast majority of people today and smarter than a majority of people who use this site. I assume that you're a relatively recent migrant or descendent of migrants with no ties to the historical American nation, so I'm not surprised you wouldn't care what somebody else's ancestors think.
The American constitution has been highly influential on many countries, and many countries have had experiences that contradict the ideas in it quite successfully.