As Bradley said, “Amateurs strategy. Professionals talk logistics”.
Interesting observations. I just finished reading Fermer’s “France at Bay” which is a history of the Republican phase of the war. It certainly would support your viewpoint, although the quality of French leadership continued to be absymal.
Napoleon III and Bazaine set a very low bar for leadership. But I think Faidherbe and Chanzy were a cut above the other Republican commanders, who were a cut above the Imperial generals. Makes me wonder what Chanzy could have done with an army of trained troops.
If I recall correctly, Chanzy was the only French commander that Moltke actually praised.
As for trained troops, I rather like the story of a National Guard unit that heard a single shot, which may have been from a Prussian rifle, or perhaps simply an ill trained recruit dropping his own piece. They panicked, fired off all their ammunition and then left their trench to go back home to Paris as they had no more rounds.