Charlie Stross also doesn't even understand why he hates BTC. He complains that it's deflationary, but then completely botches the reason why standard left wing theories claim deflation is bad.

http://www.bayesianwitch.com/blog/2014/bitcoin_critics_not_e...

Jbooth was far more honest than Stross: "Personally, I just get annoyed at the libertarian dreamers...I find myself hoping it'll crash just to shut these people up."

So, it's because its the digital equivalent of a 'digital gold standard' that is hard to track and tax (by design). I guess that explains why it rustles many jimmies, even moreso when it keeps gaining value and marketshare.