Six years after the OP it's quite interesting to revisit the argument:
The OP still holds IMO. Empirical facts have proven the theory.
You might want to start a new thread on it, though. I'm not sure if all these posts will get deleted because of a necrobump.
You're right, however. It still is a relevant discussion, although I have to plead ignorance as to how much of an environmental impact bitcoin mining has. People didn't think burning coal harmed anything many years ago, and now we're paying for it--and all these gas-powered cars, too.
I've gotten into PoS coins somewhat, although bitcoin is my first love in crypto. At least with PoS, you can help secure the blockchain without having to mine, and it definitely uses less electricity and has got to be better for the environment. But I'm not sure what to believe these days.
