Trump is the epitome of weakness. Overreactive, insultingly so, to legitimate questions and to mostly imagined slights.
He's clearly a bully, and bullies are intrinsically weak.
He's not nearly strong enough, disciplined enough, to prepare, to learn, to speak informatively and with clarity.
He is the president for those who state that 'he says what I think'. Most intelligent people know that is NOT what they want, bur rather someone who surrounds himself with well informed people because no one knows all that they need to know to be president.
Self-knowledge is strength.