Requiring a high standard of evidence would appear to be impartial. But state media has direct access to evidence for fleshing out the official narrative, even regardless of how real it actually is (eg yellow cake). Meanwhile those pointing out a "crazy conspiracy" are left hoping for leaks.

Previous speculation about USG extraditing Assange was solidly grounded in looking at underlying motivations and capabilities. Claiming that there would be no extradition was essentially implying that Assange couldn't be charged under US law, presumably due to some combination of the first amendment and jurisdictional issues. To anybody that pays attention to how USG actually operates, this was at best naive. Now the reality has finally been demonstrated.

This tendency to malign a non-official narrative as "crazy" for lack of a smoking gun demonstrates exactly why leakers are so vital. The conversation of 2012 would have looked much different if "he's hiding in the embassy simply to escape a rape charge" had been a completely nonsensical position. But as it was, it provided a basis for FUD while the "Assange bad" drums pushed people into thinking that it's right for something bad to happen to him.