The second part you noted "I Think" which makes it only your opinion, and everyone is entitled to that with no argument. Well not from me anyway. Although, I believe your verb selection to be a little shortsighted, reckless, and narrow-minded leaning towards hating. Also, if that's not tearing someone down I don't know what is. Many of the judgments are about the man not his product. Don't just come with a complaint, offer a solution.
The first part in bold can you show me the data please? As we all know people learn and receive information differently so is this one of those times when you should maybe say this doesn't appeal to me, and move around. I have seen more opinions on this thread that his core message is on point than those dissenting, angry because he topped it with hot mustard instead of honey.