You might think that there is nothing to be done with the the people who spread lies and misinformation (and worse) on social media. But I believe that there is nothing inevitable about it and it is not impossible to fix.
For a case study of this, see this piece: Vaccine misinformation has run rampant on pregnancy apps in The Washington Post. The What to Expect app was being overrun with misinformation until they decided to clamp down. The result?
The experience of What to Expect shows that, when smaller apps do explicitly prioritize content moderation, the results can be striking.
The Post backed off a bit, but I would not. I think that if bigger apps did this too, the results would also be striking. I think the bigger apps like YouTube and Facebook and TikTok and Twitter only do it when things get too extreme. Otherwise they are happy to have the engagement, even if people think their sites stink.