Actually it is a good article. “Too smart” is used in an ironic way, sort of like “Too smart for your own good”. The gist is the over-reliance of the Clinton campaign on analytical models that were “static”.
Their reliance on models is also to be seen in the Warmist scam. Their models, being unable to predict the present from the past, are likewise crap. They seem to think that running their opinions through computers turns them into facts.