I don't think John mcAffe has any more creditability than the imposter Craig wright. Though there could be some people who personally knows satoshi nakamoto like theymos or cobra or some early Bitcoin developers but I highly doubtful satoshi would be in contact with someone like McAfee.
McAfee is a drug addict. He is on the side of anyone who offers him a nice payday.
The very fact that McAfee is threatening to reveal satoshi just shows how retarded he is. No one in his right mind pretending to consider Bitcoin to be a greater invention than the internet and agriculture (his actual words) would do something like that to satoshi. Bitcoin allows McAfee to enjoy financial freedom, else his finances would easily be frozen or even seized. Fucker.
Satoshi did the right thing to only interact with a select few people, and McAfee was definitely not part of it, or even close to the people who had contact with satoshi.