Summarized;
1. Complexity of tech and rate of change in tech.
2. overcomplicated systems
3. Politics
4. Corruption
5. Clueless government
The intelligence gleaned in the R&D of the Comanche RAH66 helicopter project referred to in the video was put to use in creating the stealth Black Hawk.
Also a key factor in the successful mission, raid, on Bin Laden years ago.
Therefore the Comanche was not a failed project.
The DDG 1000 Zumwalt-class guided-missile destroyers, also refered to in the video, are not a failed project either.
Anyone living in San Diego may have noticed this.
"Make no mistake about it, these three ships will be mainstays of a powerful maritime presence in the Western Pacific.”
RADM Paul Schlise, USN, Director, Surface Warfare (N96) at SNA 2021 Virtual Symposium
The self propelled XM2001 Crusader Howitzer (tank) was also not a failed project. The T&D gleaned from the project gave rise to the lighter deployable XM1203 NLOS-C.
That's all I care to debunk in the video.