As important was the German failure to modernize their tank repair and recovery procedures. All was rosey for the first 2 years with their centralized maintenance pipeline but once they attacked the Soviets and started running into the difficulties of vast distances, different rail sizes, partisan action, interruptions from bombing...ect placed a heavy stress on German tank maintenance. One that forced them to play catch up the entire rest of the war. I dont know if this was mentioned in this presentation or not but even great tanks were only as good as their maintenance supply chain was.
The first waves of Tigers in particular were almost a total waste because there were very limited spare parts to keep them running. Most of all engines and transmissions. And not only was this a resource intensive tank to build it was even more so to keep running. The same thing, actually worse, happened with the introduction of the Panther tank. It was rushed to the front without proper testing and quality control and there was no forward maintenance units able to fix the design flaws and get them back into the battle quickly, "those even recovered". So because the Germans were still trapped in their centralized repair procedures hundreds of Panthers had to be sent back to factories in the Reich to have components redesigned and repaired.
All this turned front line repair units into cannibal repair units that fed on their own just to keep others running out of sheer desperation. And every tank cannibalized is one less tank in action.
So tank "production" is just one chapter and not necessarily the most important. Nor is tank "design". Tanks are only good if they are kept operating. In the east, where the real war happened, I think this haunted the Germans the entire war.