I'll have to watch this later...the Sherman remains a very controversial tank.
Viewed as almost a wonder weapon in 1942, by 1944 it was largely seen as well behind the times but there is a lot of argument as to how much that really affected its success in the types of combat it generally saw. The upgrade from 75mm to 76mm cannon was generally disappointing and there is evidence now that the US could have easily introduced a 90mm version of the Sherman in limited quantities like the Brits did with the Firefly 17pdrs to give their formations far more antitank bite. Seems like the US decision makers said, gee, the turret is cramped with the big gun and the Pershing is coming soon (barely before the end of the war as it turned out)...while everybody else fighting in Europe was rushing more powerful weapons in as fast as they could. Of course, the unique shipping needs of the US forces came into play there, too!
I read Belton Cooper's "Death Traps" some years ago and his perspective as a member of the unit that recovered and repaired (when possible) US 3rd Armored tanks in WWII was unforgettable...
My father was in the 2nd Armored during WWII, but as armored infantry and not as a tanker...he wasn't quite so negative about the Sherman, but he told me terrible stories about the tank destroyers and how vulnerable they were. He said the crewmen of the TDs were terrified of taking any kind of fire and that 5 were knocked out in one night when they were mistakenly left at the perimeter of their camp after dark...with those loss of all crew members but one.