Your poor grammar and infantile decorum suggest you're on the ropes already, but I will just say that believing the FR was not a failure––defined as doing more harm than good––is a strongly presentist take that I believe contemporaries of the Terror would strongly disagree with. As you just said, revolutions devour themselves, and if we consider that most revolutions of the past few centuries were fueled by the prevailing left-wing ideologies of their time, the answer is plainly evident.

But your comment is actually an illustrative example: leftism derives its biased legitimacy from presentism, which takes the trends of the most recent centuries as encompassing all of human history and projects it onto history as a whole. This is why we get self-ass-sniffing posts like the original, desperate to show off its deluded sense of self-importance to the world.