Fact checkers are extremely misleading, pretend to be some kind of truth authority while it's just opinion usually designed to distract or cover up lies. They're heavily upranked now.
Whenever something is 'fact checked' its an indication that some information is being used to manipulate public opinion. This algo should also be able to detect fabricated "news".
We can be certain that any media arena that has any kind of fact-checker operating is, beyond any doubt whatsoever, merely a disinformation or propaganda machine.