The political terms “right” and “left” have meant the same thing since the French Revolution.
the weakening or abolishment of capitalism - the traditional dividing line of left and right
Wasn't the French revolution just abolishing feudalism and the monarchy?
You've just introduced a whole other definition of leftism. Also it seems to mean that no leftist society could exist in practice.
From what I can figure out, it was still in principle feudal but moving towards capitalism due to the growth of the bourgeois class. Is that correct?