The current Air Force 1 disaster is not just a Boeing problem.
It's a classic example of what happens in military and civil procurement when the customer keeps changing their mind about the brief, everyone gets visited by the 'good idea fairy'/feature creep takes over, and the entire project ignores realities on the ground.
This pooch has been screwed, by everyone, multiple times and in multiple ways. Boeing, the Air Force, DoD, various suppliers, the White House - there's so much blame to get thrown around here.
Design on the VC-25B has been "finalised" about four times. Only for someone (DoD/Air Force, the White House) to come back with some bright ideas or a bunch of new requirements. Or for someone to discover something has gone catastrophically wrong with the actual work being done. Things like several hundred miles of wiring installations being faulty, the environmental control sub-systems being installed incorrectly and malfunctions, discovering cracks in the stringers near the doors, or the realisation the company that makes 747 passenger windows went bankrupt in 2022.
The pandemic also didn't help. Boeing and sub-contractors have been permanently short of engineers on the project for at least the last 42 months.
I'm DEEPLY skeptical that a fresh start would do anything good for the project. Frankly, I think that all that taking this "donation" would do is result in a new set of problems cropping up as they try to cram all the specalised 'Air Force Oneness' into the airframe.