Do you really believe there is no such thing as a lie?
I don’t want to trust Facebook as an arbiter of anything because their motivations do not align with anything other than personal profit, but people do completely fabricate things and present them as true.
There's such a thing as a lie, but "misinformation" isn't a synonym for "lie". Efforts to fight misinformation are almost always understood to encompass misleading information - that is, information that's literally true but is used to advance an argument the misinformation checker doesn't think is valid.
At least with COVID, one day the same idea can be “misinformation” and the next it’s a blessed fact from the Deciders of Truth. Originally it was misinformation that masks protected you from COVID. So no it’s not as simple as a “lie”.
