Earlier quoted context omitted.
In the short term, maybe. But in the long term, it was a catalyst that forced reforms (and further upheavals) across the whole continent; it was a large stick to carry at each negotiating table for freedoms, human rights and so on. In the same way, the Russian Revolution eventually generated Stalinism and brought suffering to the Soviet block, but it was a tremendous inspiration (and often brought material help) to w…
I'd recommend reading Fatal Purity if you want to understand just how evil the French Revolution really was - even the architects became its victims in huge numbers. The terror is not something I would wish on any country, and it is no way comparable to the American revolution in scope or brutality, that and the Russian revolution are fascinating periods but great examples of why revolution often ends in disaster for…
You might want to also check out The Anatomy of Revolution - it details the broad life cycles revolutions succeed through. It concludes that revolutions are overall detrimental to lasting change in a society. The American Revolution is discussed in order to explain why it turned out atypically.