A political withdraw is hardly a run away. True there was no time to take out their hardware. Still the hardware was paid for and the US Armee is not drilled to save money. Rather the opposite.
You don't seem to grasp the significance of it so let me put it this way.
For example after the Great Escape, Taliban became the owner of the second largest Apache attack helicopter army in the world! That's how much they left behind... and that's just one of the things they left.
Not to mention that a sample of everything that was left behind during the escape were given to the adversaries for research (finding vulnerabilities, reverse engineer if needed, etc.).
I haven't even gotten into all the classified stuff they left behind when they were escaping Afghanistan. From documents all the way to communication secrets.
What they physically left behind might have been in the billions of dollars but the damage to the US military was in the trillions...
One major damage for instance was for all the operations US military carries out using the locals. All those idiots who were cooperating with the US occupiers in any country around the world realized what US does to them after they saw Afghanistanians fall from US wide-win aircraft to their death, people who were promised US citizenship if they cooperated with their occupiers against their own country.
The subsequent major US military defeats in places like Syria, Iraq and even in Africa can be attributed to the Great Escape...
How is this fitting in your narrative:
US Air Force connects 1,760 PlayStation 3's to build supercomputer
I don't know, you tell me how did that help US Air Force for example this morning when they lost another $40 million dollar aircraft after it entered Yemeni airspace. That's the 12th one that gets shot down easily over the past year.