I like how he (conveniently) leaves out trustless and decentralized, which you need unless you're trying to create the exact same system cryptosystem were built to disrupt, not that there's anything wrong with that, just seems kind of pointless.

Also, Toky, if you  knew better, you'd realize that public blockchain can be replaced with coinbase and still hold true, unless you think math is voodoo or witchcraft.