The man associated with the popular antivirus turned into a crypto enthusiastic and became one of the most herd crypto celebrity when he started to review and endorse ICOs. Many ICOs were hit just because they were endorsed by McAfee.
But now, his words are losing weight and his endorsed tokens are not always a success, McAfee vowed not to promote ICOs amid of his opinion of thereat SEC posed towards ICO future.
https://www.coindesk.com/john-mcafee-wont-promote-icos-anymore-sec-threats/I think most of the ICOs that he has been promoting has something to do with him. He is shilling coins and tokens to make profit from it, and he is paid to promote it since he is well-known and influential in terms of computer and technology. That is why most are aware of this, and not following what he is shilling.