Argument: "It's not even cryptographically secure"
Counter-argument: "We don't even need cryptography!"
This is how greed corrupts one's head into a mush of self-confirming biases based on pseudo-sense. What's sad is that it probably makes perfect sense in his head and he thinks everyone else is crazy.
I'll just ask (mostly for entertainment and not seeking a reality based solution): how does one create a fungible cryptocurrency without cryptography?