The founding fathers would be aghast at what America became. Hard to imagine modern America passing some of those constitutional amendments that older America passed wayyy back.
Many if not most of the founding fathers owned human beings, and the vast majority of people (94% of the population) weren't allowed to vote because they didn't own property or they happened to be female.
What are you even talking about?
Who cares what the slave owners thought. What you should care about are Americans who support this stuff now.
On the other hand, why care what the American founding fathers thought? There have been two centuries since then of developments in democratic countries that some Americans could choose as a model they like more. And now it's the Chinese century anyway.