There's a whole lot in the summary that is just wrong or out of date. First off, the energy consumption for bitcoin mining is becoming more and more efficient, especially this year thanks to the addition of ASIC circuits for the job. Also there are several alternative currencies that are trying to address this with alternatives, including Peercoin and Primecoin.
Next, the news of malware for mining Bitcoin is not new at all - it's been happening for well more than a year. And the defense is the same as always. Really this is an issue of malware, not an issue of Bitcoin. There is also malware out there to steal credit card numbers and bank account information - that's not a strike against credit cards or bank accounts.
Finally a lot of this is a matter of opinion. The author thinks a deflationary system would be terrible - many of us think it would be wonderful. This is actually addressed in the Bitcoin FAQ with a link to a real article on the theory so you can consider it and make up your mind rather than starting with a preconception off the bat. If you conclude that a deflationary currency is bad, don't use it - meanwhile let the rest of us use what we think would be best. If you like the cryptocoin concept but don't like deflationary currencies, there are altcoins that do not have a capped supply.
As for other points of the libertarian agenda - again, if you don't like it, don't use it. I support your right to pick the system you think would work best, and I think I should be allowed to do the same. "it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness"