Uh the reign of terror of the French revolution and Nappy predate the years Les Mis was set in but otherwise your point about what violent revolutions usually bring about is true.
While folks here at FR are historically literate (and you are of course correct) mine was more about the nature of French (anarchist) uprisings. Since the modern version of education doesn’t require one to learn dates, I was merely taking the easier, sloppier way