"From reading this, I conclude you have little or no knowledge about the top of large organizations; how management functions, etc.
Only Carter, rated among the worst Presidents, tried to absorb massive amounts of detail.
Reagan, rated near the top of Presidents, wanted little to do with minute detail. "
No one said that Trump had to absorb "massive" amounts of detail but reading his daily briefs and doing a bit of humble homework is not too much to ask of any POTUS. You can research these daily briefings and what they are for with a simple search. They are not massive amounts of minute detail. The POTUS has a cabinet and advisors for a reason.
The point is, that his briefings are already downsized. It probably is unlikely that they can be condensed to a "Dick and Jane" reading level.
There is a vast difference between running a corporation large or small and a large country like the US. I think everyone realizes this is true. When the head of a corporation makes a mistake usually no one dies because of it nor goes to war. I don't think that can be denied.
This being said I think it is beyond time for the POTUS to show a bit of humility as to what he doesn't know and make an effort to make sure he gets himself up to speed as much as possible. The President's priorities are in the wrong order. I don't not wish to be part of his personal reality show.
Everything that Donald Trump has done tells me that this is all about him. He has a very fragile ego, ill-informed, not well-read, and is very self-involved. He cannot admit to mistakes and appearances are everything to him. It is my belief that is a very dangerous man to have at the helm.
He has made many many mistakes in his business and personal life. He has had some business successes but also many failures as well. I hope being POTUS won't be his biggest failure of all but it seems Donald Trump is either a very slow learner or is incapable of learning.