he is a multi millionaire and security expert thus people give value to his comments on the coins but there are some claims that he demand for 25 btc and 15% of supply of coin for giving any status about the coin.... you should make your research before investing in any coin
Although I don't pay attention to him much, but those claims were based on photoshopped pictures of his chats (fake discussions with coin devs interested in his services)! They weren't legit.
