I don't sympathize John McAfee at all. But I agree with this statement. Cryptocurrencies are really our biggest hope to have our own independence in terms of money. If we lose them somehow, it'd be really devastating for all the community.
As already explained by other users, it is not his statement. It is the vision from Satoshi Nakamoto, which he explained in the Bitcoin white paper which was first published in 2008. John McAfee is doing what he does the best - plagiarizing others and taking credit for other people's work. Bitcoin may be our hope for financial independence. But at this point, let's not forget the fact that McAfee is one of the individuals who made it a lot more difficult for us to achieve that financial independence, with his numerous scams and ponzi schemes.