Journals are in the same boat. Any good they have done is dwarfed by the few 'honest mistakes', like Alzheimer's cabal: https://www.statnews.com/2019/06/25/alzheimers-cabal-thwarte..., which have done more to stifle science than anyone since Stalin picking which biological theories are socialist enough to be true.
I think you're conflating the notion of perfect curation. I don't think anyone is claiming that journals or journalists are infallible. They certainly make m, although I don't think I agree that the good is "dwarfed" by them, except when used as a direct attempt to undermine credibility by adversaries.
Put differently, do you think bad ideas spread more easily with the internet? The current research seems to think so, and if you agree, I don't see how that mitigates the spread of bad information. If anything, it exacerbates it.
I think that every bad idea spread by the internet dwarfs the harms done by ideas spread by government. Every issue with the middle east over the last 20 years is the direct result of a crusade launched on a lie enthusiastically repeated by the same people claiming the moral high ground today.
Journals are in the same boat. Any good they have done is dwarfed by the few 'honest mistakes', like Alzheimer's cabal: https://www.statnews.com/2019/06/25/alzheimers-cabal-thwarte..., which have done more to stifle science than anyone since Stalin picking which biological theories are socialist enough to be true.