This is not at all up to the point analysis and anyone would disagree about what this guy has said or trying to convince others. I have literally laughed about his analysis, because he is trying to segregate investment based on a technological advancement VS vehicles that run on it. I mean it is same thing as stating that you should not be investing into Dubai but you can invest in Oil which is getting dug out of their soil(!)
This is his point of view, he managed to build a successful business and sees certain risks in investing in bitcoin. I agree that it is impossible to invest all the money in one thing, there must be diversification in order to protect us from large losses that can significantly affect us.
Rich people who have already created large fortunes will be convinced that they are right in their judgments because they have achieved their goals with other tools. Moreover, bitcoin is a new technology that not everyone has figured out, and perhaps there are those who are simply not interested in it. Why does he need it, if he already owns a huge fortune, and he has achieved everything he wanted.