I see Atcheson's point but I think he needs to remember that Trump is a Prince of inherited wealth. Trump may be an idiot (he really did seem more intelligent before he got elected and then we had a good look at him and listened to his sometimes unintelligible speech patterns) but he has always been in a position where he delegated authority to people who got paid to be smarter than he was, so his 'idiocy' didn't show as much.
Trump paid high priced lawyers to arrange his deals. He paid expensive consultants and investment managers and on and on and all of those people were exceptionally intelligent. He paid someone to ghost write his book for him. Trump makes the same mistakes as he was always wont to do but back then they were always covered and massaged for him by his staff! After all... he was the Prince!
The Oval Office is not quite the same as a business conference with his lawyers, assistants, bankers and etc. Thus we see Trump blurting out statements that his advisors pull him back from as soon as they get the chance. Being president means everything you say gets publicized and despite all his billions that was not the case for the Prince back when he was just a wheeler and dealer.
Trump runs without a script too often but who in his entourage will dare tell the Prince that when he speaks (without their permission first) he ends up sounding like an idiot! Trump may be feeling constrained by his need to be less reckless and impulsive.
Trump unfiltered? Yeah well maybe he really is an idiot too!
Trumps just wanna have fun!