I don't read it as making a case for human systems over bitcoin. He is simply pointing out that bitcoin (and all cryptocurrencies) are more of a human system than the true believers believe.
I found it interesting that one of the first things that happened as bitcoin grew was the creation of mining collectives - literally the opposite of decentralization.
Miners aren't running the show by themselves. Monero will soon fork away and brick all ASICs again for example.
Forks aren't opposite of decentralization. In fact it's decentralization at work when different communities can split off and do their own thing. You're always free to use whichever fork you want, or all of them.