The Democracy of the founding fathers was Greek Democracy, predicated upon a slave society, and restricted to only the elite. This is the society we live in today, even with our reforms towards direct representation. The system is inherently biased towards the election of elites and against the representation of the masses. Hamilton called it “faction” when the working class got together and demanded better conditions, and mechanisms were built in (which still exist to this day) that serve to ensure the continued dominance of the elite over the masses. The suffering of the many is intentional. The opulence of the wealthy is also. This is the intended outcome.
I'd say dismantling the German Reich was a great improvement albeit the successor states weren't without exploitation.
Same for dismantling the US confederation, all the independence wars against colonizers, many revolutions and so on.
You cannot demand dismantling to only lead to a perfect solution, while any form of reform is okay with even the most miniscule improvement.
Both have their place and time. But you will always need to dismantle, when the problems are intrinsic to the system.
Those were both dismantling from the outside. Outside powers prevented power vacuums from forming which could be exploited by the least scrupulous people. I can't think of many times where government has collapsed that didn't lead to enormous turmoil.