The problem with the US Constitution and its religious status in the US is that it contains both fundamental rights and protections for citizens, AND the mundane details of implementing the government.

If you put 500 mock Constitutional conventions together at universities and cities across the country, I would polymarket my 401k that none of them would come up with the same structure we have today in the US. Many republics founded since 1791 have far better democratic structures than the US does. I call the US a semi-democracy because of our Senate, Electoral college, gerrymandered House districts and first-past-the-post voting.