Hi Maylay,
The $500,000 Bitcoin expectation does have some good maths behind it actually! Mainly but not entirely due to the imminent collapse of Fiat currencies across the world. But what I enjoy most about John McAfee are his views on security matters. He has shared invaluable information such as the dangers of using any public wifi spot and a high percentage of routers in homes across USA and rest of the world are also compromised and dangerous!