It's nuts alright.
I think I have made sense of it now. Apparently, Trump was miffed when he saw his current Airforce One plane alongside the ones the heads of the Gulf states have. They are much newer and more blingy inside. So, I think Trump's plan is that he will take the Qatari plane and use it just as it is for the rest of the Presidency. He won't bother fitting the secure communications, refuelling etc. which make it a flying command centre. And then when he leaves the White House he will have a swanky $400 million plane to gad about in.

