Carson used to seem likable and I thought he would have the strongest chance in the general election against Clinton. I can't say the same now. There are aspects like his obsessive book sales, his grain pyramids, and his ways of dealing with media scrutiny that have made him look way less appealing.
1. the grain thing was a quote from decades ago that they drudged up.
2. obsessive book sales? what?
3. the media always attacks republicans the most he just decided to call them out!
1. In elections, it is very common for the past to be excused because it is believed that the most recently stated opinions are the ones that the candidate believes in. This is a concept that many Trump supporters have accepted. In most situations, the past can be forgiven. The Republican party is one often touted as anti-science for their political beliefs. For Republican voters, it is discouraging to hear such an unscientific claim be made, as it allows the stereotype to grow. Carson could've easily changed his mind on such a claim, but he chose not to. A man with such illogical tendencies and stubbornness is not one who many people want for president.
2. Although it is just a theory, some people theorize that Carson's entire candidacy is just to increase book sales. Even if this is not the case, he, more than any candidate, has focused a ton of effort into improving his brand name.
3. Yes, and it's great that he called them out. The problem was that he took it too far. If you watched some of his interviews, he showed visible distress. It even reached the point where he refused to answer what seemed to be fair questions in his "protest" of the media.