Don’t forget the good news is that the founding fathers are all long dead and future generations don’t have to make this country exactly how they envisioned it.
There are ideas during the Enlightenment and Age of Reason that still has value today, even if complicated by the immoral actions of the time.
Dogmatic adherence to a belief diminishes people, and they become enslaved to their set of positions. Essentially this is a submission to authoritarians, and a surrender of reasoned thought. During that era this was a recognized problem with organized religion. And today it is a problem with our system of political spectrum. Perhaps the greatest threat to democracy we face today is the rising political isolation where aberrant beliefs now carry no consequences, as if talk radio and social media were an echo-chamber.
(I prefer the metaphor of an anechoic chamber, not only can you not hear the outside but you often can’t even hear yourself)