I'm not convinced this is true. Take Wikipedia for example, the overall information quality is extremely high, especially considering it is open to all to edit

I'm not convinced this is true. Take Wikipedia for example, the overall information quality is extremely high, especially considering it is open to all to edit. One would assume (and many did at first) that Fake/false/random information would reign supreme. This is because Wikipedia policies have made it clear that all information must be derived directly from primary sources. Multiple editors are aligned with that policy and work with others to enforce it. The general populace has not been trained to do that, so false information proliferates. Maybe that reasoning skill is what we should focus on teaching.