Trollish headline. One fair non-structural criticism, a weak, temporary criticism and two things billed as criticisms that aren't. 1) Early adopters. I couldn't find a point here. I think he's saying that it's unfair that some people get in early. But in the current system, it's unfair that government (through tax law and control of force) mandates that you use a form of money that doesn't function well as a store of…
The point is that it's a scam. It's designed with enriching the people who made it up in mind. The only difference between this and my "Hey let's all use these pieces of paper that I printed as money" scheme is that these guys actually got it off the ground by allowing the first few adopters to also print their own money in significant quantities.
2) Deflation. There's a creed in mainstream economics that deflation is bad, repeated here. "if your money is getting predictably more valuable, why would you want to spend it?" It's just false. Would you buy a computer today if you can buy a more powerful one by waiting until tomorrow?
Computers, yes. Food, yes. Other stuff I actually need right now, yes. But I sure as hell am not gonna invest in your startup... or in any other business for that matter, so that's just wiped out half the economy. I'm also not gonna buy a house, I'm gonna rent... but who'd be dumb enough to be my landlord?
Really, the faith which some folks seem to have in this particular bubble-in-value-of-intrinsically-valueless-asset is scary.