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What he did there hurt Trump, the American people and even the German AfD.
He should:

  • apologize
  • stay out of the public

That type/degree of autism is dangerous.

Some form of brain disorder is a good explanation for how he rejoices much like a child would, without any restrains. Maybe the same brain disorder (if that's the case) allows him to be so efficient and bold in his work, often at the borderline between science and fiction.