I am genuinely interested in rebuttals of bitcoin. The second section is where I stopped reading, calling it a crime against humanity due to power use. It trots out the same piece of work from digiconomist to claim it uses a countries worth, of coal-fired power station generated, electricity to run the network. A claim that has been questioned and IMO debunked rather thoroughly [0] or more recently here [1]
[0] http://blog.zorinaq.com/serious-faults-in-beci/
[1] https://hackernoon.com/the-reports-of-bitcoin-environmental-...