The point is about the concepts of the European Enlightenment being derived from Native Americans (which is absurd), not that the Founding Fathers specifically understood and owe some debt to Native American forms of governance (which is controversial but mainstream and backed by evidence).
It’s not that outlandish if a bit hyperbolic.
https://www.senate.gov/reference/resources/pdf/hconres331.pdf
The point is about the concepts of the European Enlightenment being derived from Native Americans (which is absurd), not that the Founding Fathers specifically understood and owe some debt to Native American forms of governance (which is controversial but mainstream and backed by evidence).