Fact-Checker(s)
According to testimony given by social media companies, such as Twitter and Facebook; fact-checker(s) or derivatives thereof, is a code/slang/urbanized term meaning "one of our employees personal opinion".
Fact-Check = Opinion
1: Fact-checker(s) determined that the rumor of the Vatican moon landing of 1964 is True.
2: Fact-checker(s) determined that the rumor of the assassination of JFK is False.