Confirmation bias is definitely in full effect... My comment was on the technical aspects of the story and specifically highlighted the non-technical evidence as substandard. Joe Random bloggers who I've seen repudiate the government have by and large been well-known security experts compared to the nameless hand-waving of the FBI. I think what it comes down to is the question of whether educated people, after Snowden, WMDs, torture, and so on are better off presuming the accuracy or inaccuracy of the government's statements.