As for what Tok is trying to say here (I believe, I could be getting him wrong, hate to put words in people's mouths) is that cryptonote was designed initially to be used with a central authority that holds the "keys".  Throwing those keys away only makes it impossible for anyone, not even a central authority to verify what happened, inside or outside of the blockchain.  The cryptography must be trusted, which kills the whole concept of trustless.  Thus his constant harping on illegitimatizing the blockchain.