Earlier quoted context omitted.
Germany doesn’t exactly have a good record when it comes to new governments. Nor does France. Very odd to use them as positive examples. As flawed as the American government may be, the Constitution is still a more solid foundation than pretty much anything that has come out of Europe since.
Well, the 5th French Republic is going well since the 50s, isn't it? As is the post-war BRD in Germany. Both used to have an Emperor at some point, Italy went from Kingdom to Facist regime to democracy. So yes, if the situation changes you can change your government form. Basing 21st Century politics on something written in the 18th century is... weird. Especially as it is more the interpretation of what the authors…
Is it going well, though? There's never been so much inequality, industrial pollution is spreading everywhere (is there even a single river left you can drink in France?!), political corruption has been adopted as governing principle (see also: Jacques Foccart and the Françafrique scandals), law enforcement is plagued by nazism (French police was never denazified after WWII), and the social services De Gaulle was forced (by popular power) to implement have either been dismantled or rendered painful for both workers and users (healthcare/education/housing).
> Basing 21st Century politics on something written in the 18th century is... weird.
I agree in principle, but it's important to realize that the most important social issues we face today (including depletion of resources and pollution) have been fought against for centuries. We have a lot of lessons to learn from the past.