No, GP's position seems to be closer to "actually being sure about something requires more evidence than has been given".

To me it feels more like "more evidence can ever realistically be available, especially on intelligence operations, thus i can just ignore articles with content I don't like". Especially the attack on reputation worries me, since this is pretty much the only thing left to go on for average humans without unlimited time.

right, at best it's crippling. At worst it becomes a device for dismissing any news that is inconsistent with one's worldview. "That probably isn't even true."