What the grandparent comment did was bring the Founding Fathers into the discussion, took an idea from them, and then presented it in light of current events. You can evaluate the grandparent comment's idea without including the Founding Fathers; the reference is relevant only to show the changes that have occurred in the last 200 years.

...because we have documents (e.g. the Federalist Papers [1]) that explain their philosophy and arguments. Moreover, significant technological advances aside, our basic psychology / neurobiology remains virtually unchanged, and so many of their initial insights into mitigating the risks of human political systems still pertain.

For instance: they foresaw the problems powerful interests acting in bad faith could cause, and so we now enjoy judicial recourse when politicians or appointees make arbitrary, capricious, or corrupt decisions. The fact that we're discussing legal challenges to the FCC's decision as even a possibility underscores this point.

We understand more about human psychology / neurobiology now, of course, so this is one limitation of uncritically accepting their advice. We also have the benefit of over two centuries of additional hindsight. Still, I think there is good reason to at least consider the opinions of people who would, by any reasonable reckoning, count as political systems design experts of their time.

[1] https://en.wikipedia.org/wiki/The_Federalist_Papers

"government maximizes the freedom of the people by preventing the infringement of such freedom except in cases such that there is a mass consensus of its merit" seems pretty clear. The argument is that the freedoms the founding fathers wanted to preserve are protected by making it hard for corrupt politicians to take them away. The vision of the founding fathers is taken seriously because they were very smart and America has been very successful in many respects.