I'm afraid you may be mistaking the exaggerations of a bumptious lawyer making a public case for separatism for the more subtitle beliefs of a complex man.
We have, for instance, a government of bumptious oafs for whom -- especially in foreign matters -- arrogance is clearly a much preferred substitute for performance.
But some world leaders are seeing signs of softening rhetoric from the famously bumptious billionaire, and have expressed hope that he will engage with the rest of the world.