That said, I think it is great that they are trying to characterize this sort of thing. The second law of institutions is that every process must require more people to execute than can conspire without being detected[1]. But relying so much on humans in one way or another is going to gum it up. My mom for example, a certified human, would always flag anything that offended her belief system as 'fake news.' Fact checking is fine but it is important to understand that conspiracy folks actually believe what they are saying is true, regardless of any facts presented that contradict their world view. I have always attributed that to an internally rooted desire to "need" it to be true, either for their own self image or their own conscience.
[1] No, I just made that up. But the kernel is true, if you have a system that is being gamed you have to build a defense that cannot itself be gamed.