Why Does Der Spiegel Understand Donald Trump Better Than Many Americans?

“Donald Trump is not fit to be president of the United States. He does not possess the requisite intellect and does not understand the significance of the office he holds nor the tasks associated with it. He doesn’t read. He doesn’t bother to peruse important files and intelligence reports and knows little about the issues that he has identified as his priorities. His decisions are capricious and they are delivered in the form of tyrannical decrees.” – Der Spiegel

100% correct.  Why can’t Americans see it?  Why?