There are various styles of speaking that can attract and maintain interest depending on the audience, venue, format, and topic. Some of them deliberately eschew such things as interpersonal drama and conflict as detracting from the subject matter. The obvious comparison, which the article touches on, is between Trump and Obama: Obama is widely considered a very effective speaker (notwithstanding those who viscerally loathe him), but his style could hardly be more different than Trump's.