So-Called Fact-Checkers for People Who Need to Be Told What to Believe & Why Do Fact-Checks Always Favor the Leftists?

Traditionally fact-checking was done by the individual consumer of news, following the wisdom to “do your own research,” yet now there are “official fact-checkers,” so why do people trust the “fact-checkers” other than that they want to be told what to believe, desirous to be blissfully ignorant?