"Sensationalist garbage? I'd be in favor. <etc.>"
and then I read the article. Unfortunately, it is sensationalist garbage. I don't know why you were downvoted.
The author's point of view seems to begin and end with "using violence-related metaphors in your speech, makes you a bad person".
1) Bitcoin has the potential to destroy the tools of monetary policy. 2) Bitcoin has the potential to hide taxable income from governments. 3) Governments with dwindling tax bases may react by printing traditional currency, hastening the flight to Bitcoin in a vicious cycle. 4) Traditional currencies may collapse as people rush to convert them into Bitcoin. 5) Unable to tax coercively, traditional governments may collapse.
What might replace them? Toll roads and kickstarter philanthropy in Randian democracies?
(Is this in the ballpark for Bitcoin's potential impact or not?)