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>Going as far as talking about a DDOS attack on Twitter
Also, that G8 article you linked has a full page MTGOX ad on page 8. Kinda ironic huh?
Okay, enough with the low hanging fruits, now some serious stuff.
I don't see how Bitcoin enthusiasts can trivially brush off the criminal activities connected to Bitcoin. The public at large doesn't care about your shiny little toy - but they do if it's used by criminals. The article specifically mentions child pornography. Now how can CP be distributed? Tor and hidden services. But how is someone going to pay / profit from it? There was no easy solution - then comes Bitcoin, and suddenly people can be absolutely untraceable on the internet. You cannot simply ignore this. You have to acknowledge it, and then a) provide some form of solution (kinda contradicts its principles) or b) argue that it isn't as important compared to potential benefits of Bitcoin.