To me, it doesn’t seem very relevant to know with certainty if he is purposely destroying the nation or doing so out of sheer ignorance of reality.
The simple fact that he IS destroying the nation is good enough for me to oppose him at every turn (and there are many twists and turns in this administration.)
The simple fact is that he-alone is irrelevant. Why?
Because without the Congress especially, and Supreme Court in general, allowing him to act freely he could not do anything. This is to say that the inaction of the other two branches is an action just as much as the decision to refrain from helping someone is a decision nonetheless.
Plus, you should always remember that Congress holds the purse-strings, if they wanted they could defund any portion of the federal government — I find it amazing/astounding/incredible that during the semi-initial revelations of the NSA domestic-espionage programs the possibility of defunding even came up.