https://www.washingtonpost.com/politics/2020/02/16/tom-cotto...
Here is a politico article explaining how Facebook won't ban you for talking about it (anymore), since they used to treat it as fake news.
https://www.politico.com/news/2021/05/26/facebook-ban-covid-...?
"Facebook will no longer take down posts claiming that Covid-19 was man-made or manufactured, a company spokesperson told POLITICO on Wednesday, a move that acknowledges the renewed debate about the virus’ origins.[...] The findings have reinvigorated the debate about the so-called Wuhan lab-leak theory, once dismissed as a fringe conspiracy theory"
> Facebook will no longer take down posts claiming that Covid-19 was man-made or manufactured,
Those *are* fake news. Suggesting covid was explicitly designed, engineered and purposely released by the Chinese government is a conspiracy theory.
The "lab leak" hypothesis is that a natural sample of covid was inadvertently released through shoddy lab practices.
These are not the same thing. However there remains zero evidence for either one.