Social media like Facebook or VK are incentivized by hype, bias and emotional triggers, even if totally fake. What exclusively counts is the user engagement, all the enthusiastic and angry comments, likes and dislikes being of equal value for the operator. None of this crap is present on #Wikipedia, which is a good example how platform motivation and structure *does* matter.

https://www.nytimes.com/2020/03/08/technology/coronavirus-misinformation-social-media.html