See this is at the heart of the matter, to me anyway.
You may be an intelligent person, but what comes across in your communication is that you are an imbecile. You are judged that way because in this medium, your posts are all we have to go on.
Same with Trump. He may well have a heart of gold and smart as Einstein, but no one will know or believe it until he is able to communicate that fact. It is all we have to go on.
It isn't rocket science.