Those who control the narrative, will ultimately define what's written in the history books. It has always been this way.
We need to consider that maybe 50% of our "factual human history" might be false narratives to control and lead the public opinion.
Fact checkers are just the next step in controlling the narrative. In the end, no one will be able to distinguish fact from fake news, and that is exactly what they want. Now with enough repetition any false shit statement can become "history".
Yup, we don't know how much of the past is made up or skewed to favor a monarchies' power. Fact checkers are going to limit ppls access to info and ppl will disregard it.