Exactly

The president is a 70-year-old child whose TV time must be closely monitored — because any news story that upsets his ego will trigger a temper tantrum followed by irrational demands that his indulgent, overwhelmed guardians will be helpless to refuse.

Or so Donald Trump’s aides keep confiding to the nearest available reporter.

  NYMag

I told you that kid of his was a clone.

But I think this is a more apt comparison:

Oliver Wendell Holmes famously summed up Franklin Roosevelt as a second-class intellect but a first-class temperament. Trump has a third-class intellect and a third-class temperament. The frightening surreality of what has happened to the United States has only begun to sink in.

[...]

If there was some lingering hope among Republican professionals that Donald Trump would somehow, as the old cliché has it, “grow” into the office, his first 48 hours as president dispelled it immediately. The White House is already jittery with fright at the unpredictability of a childlike figure who has been handed terrifying powers, like the famous Twilight Zone episode about a 6-year-old-boy with magical abilities.

  NYMag

I remember that episode.  Chait's right.  Perfect.