You can be well-informed and intelligent and still be a douche lol. You can be someone who is generally nice to people but still be self-absorbed. Self-centeredness does not exist in a vacuum, and again, unless you've seen the type over and over and spent time with them and see the nuances of their "performance", it's hard to really judge. One minor example I'll give: In his instagram posts dedicated to the Women's March or Elizabeth Warren ("nevertheless, she persisted") or the travel ban protests, he only posted pictures of himself to accompany those captions. I get social media fame, we all do, but he wasn't even taking part in the protests, he wasn't even posting a picture from the protests, and not even some static image with a quote or something. No, he posted pictures of himself looking handsome and model-y. By no means am I doubting his intellect or his work, but it's clear that he is the most important factor in the things he does, and not the socially-conscious information he's relaying.