Mcafee promoted many scam coins like SAFEX and charge money for this, he never warn investors that his advice was paid & he never warn anybody of the consequences of buying such coins.
You can read in the official discussion of SAFEX my post about John Mcafee promoting the SAFEX scam here:
https://bitcointalksearch.org/topic/m.56523912
This video from Vincent Briatore about SAFEX & Mcafee is worth watching it
https://www.youtube.com/watch?v=isDXVPP8c4U
Daniel Dabek is the creator of the scams SAFEX & Dascoin
Poker Player is right and i support him on this
unfortunately John is old and seems to have some issues with his health
https://twitter.com/officialmcafee/status/1087903387885154306