This article has been flying around for the past couple of days, and it's so riddled with misconceptions and pure falsehoods about Bitcoin that this guy should be laughed out of his job.
You know what has a carbon footprint from hell? The whole payments industry, and industry that could go away overnight if retailers, service industry, and wholesalers switched to digital currency.
Anti-malware software simply hasn't caught up yet, but sucking someone's power for pure financial profit sure is better than sucking someone's power to barrage others with email. Sure, there's still evil here, but Bitcoin itself is not the problem: there will always been viruses doing something.
Bitcoin's lack of regulation is not a Bitcoin deficiency, but rather a legal one. Blame government for treating Bitcoin as a commodity instead of as a currency, subject to the same laws as cash. Oh, wait, it basically is subject to the same laws as cash, except it's a whole lot easier to carry and the government can't create more of it out of thin air (which is a good thing, if you want your money to have the same or better purchasing power tomorrow as it did today).
At least he didn't give the argument "There isn't enough Bitcoin to go around." I'm sick and tired of defending that. There's 21 quadrillion units of Bitcoin (That's enough for 3000 satoshis per person on the planet), and it would be very easy to convince miners to further subdivide it.
This author reads like the worst kind of Keynesian: the kind that misleads and lies about alternatives, rather than attacking the principles and stability of the system itself.