1) Blitzkrieg. Disagree. The tactics used by the Wehrmacht in 1939-40 were genuinely innovative, and the allies had no counter for them. By massing armour instead of spreading it out piecemeal, by coordinating tactical bombers and armour, and by concentrating forces for breakthroughs and then running hell-bent for leather into the foe's logistical hubs behind the lines, the Germans introduced a devastating new form of warfare. And in fact, these tactics had their roots in the Stormtrooper tactics employed by the Imperial Army in the offensives of 1918.
2) Mechanisation. Agree.
3) Battle of Britain. Agree.
4) Sealion. Agree. Sealion was a bogeyman for the British and a fantasy for the Germans.
5) U.S. Neutrality. Disagree. Lend Lease certainly helped the Allied war effort, but not enough to constitute a breach of neutrality. The Swiss and Swedes helped Germany's war effort, but were still technically neutral.
6) Jet Fighters. Agree.
7) Strategic Bombing. Agree.
8) German Aces. Spurious argument. Regardless of how and why they were better, German pilots were better.
9) Barbarossa. Agree. Good analysis.
10). Axis. Agree. The dysfunction of the Axis should make us appreciate the remarkable coordination and strategic effectiveness of the Western Allies.
11) Military Intelligence. Agree.
Also interesting to see that military history is no longer taboo in Germany. The creator of the videos even says in his introduction to the series "Everyone knows what when it comes to war, German-speaking people don't f*ck around." Hard to imagine a German historian saying that 20 years ago!