Intellectuals tend to be VERY dismissive of critically looking at charisma and persuasion as tools.
They're convinced that since they're ideas are SO GOOD they should will just be accepted upon stating facts.
Besides, only manipulators and cult leaders try to be charismatic and persuasive.
But I argue that "If only bad people study charismatic persuasion, then only bad people will be charismatically persuasive"