A person that's new to the crypto market will listen to McAfee.
But if you are quite old enough and been here for quite good period of time, you will find his words as a joke.
No one knows satoshi even him, I guess he's just making a fuzz to get attention of the people again.
McAfee has been in cryptocurrency for a very long time, he may well know who Satoshi is. Who exactly can not know who is hiding behind the guise of Satoshi so these are simple users like us. Only those who worked with him in those ancient times, or who works now know who it is.