Yeah, it's like faith. Keynesian vs. Austrian and both believe they have all the answers, but it's all just interpretation of how events in history panned out. What's amazing about bitcoin is it's an entity that's never existed and could truly test the theory of what would happen with a currency that's scarce like metals, instantly transportable, uses no storage space (it exists in your head...woah), and as fungible as paper.

To answer OP's question, there are a million points you could rebuff in his article which I hope this thread has demonstrated.

I did find this amusing: "In a Bitcoin or growcoin world, the government would have nothing to offer. Frequent bank runs and financial panics would be unavoidable."

There would be bank runs if money ran entirely on a deflationary cryptocurrency. Bitcoin removes the need for a "deposit account," which means individuals have nothing to withdraw from. Also, banks can't loan out your deposits.