You are mistaking after action analysis that is used to find where errors in tactics, techniques, and procedures were in specific operations - so we can improve - with unit diaries and after action reports, which record the day-by-day combat actions in detail.
All combat operations contain errors by individuals, units, commanders but in examining the record, we did very well. Objectives were attained, the speed of advance maintained, and the German defenses crumbled. For a true citizen army, it was really inspiring. As a professional officer, I am deeply proud that the US army in Western Europe was a world beater. I can easily believe that Patton and the Third Army could have driven on to Moscow.
There seems to be a cottage industry in apologia, papers and books deriding our draftee army of WWII. It’s just a fad. The truth is that they refined and perfected combined arms maneuver warfare against the best the Germans had and rolled right over them.
Success is the ultimate arbiter.
I think two major things are being overlooked.
That the German military was very much drafted, and then something more relevant to the American draft.
If I had the choice between getting 1 million teen volunteers and them receiving rudimentary and quick training for war, or 1 million teen draftees, and getting to give them the training that I would like to establish, then I would take the choice of training, over whatever put the young men into my hands.
There is a reason that well trained troops without combat experience can so outshine experienced combat troops, and Americans see it all the time.
We can go 15 or 20 years without combat, but then we send in our combat ready units against combat veterans and we expect our guys to win, and we sure count on it from our elite units, who, without combat experience themselves, are counted on to enter enemy territory and defeat combat hardened soldiers and outfight them man for man, and do it like a well oiled machine. Training.