I used to watch some of his investment tutorials on youtube as well as other videos. For someone called the "most hated man in America", he actually seemed like a nice person. I also enjoyed his trollish sense of humor.
Not to be an ass, but many horrible people are skilled at manipulating an audience and crafting a particular persona. This man couldn't have defrauded his investors without a great degree of charisma and the ability to appear trustworthy and likable.