The thing is, much like the muscle curiass, I've becoming increasingly disinclined to just assume that our understanding of history is without bias itself. How many people see a gladiator in a movie fighting with that and don't blink an eye, even though it's not actually practical to wear that?
I mean, people see Braveheart and assume Prima Noctis was a common thing, because hey lords could do what they want and it's fun to imagine them being all dastardly. How much of how we think history was is the way it actually was?
Unfortunately it's not really verifiable and what people decided to record is all we'll have to go one.
Historians refer to this understanding as something called the "linguistic turn". It started out as an acknowledgment that
the words used to describe something impart perspective and/or bias in and of themselves, and that there is no such thing as a completely neutral description of any thing in any language. Now, however, the linguistic turn has become shorthand for a more postmodern interpretation of history, whereby "how it actually was" (
wie es eigentlich gewesen, in the Historicist words of the German historian Leopold von Ranke) is seen as unobtainable, even if by attempting to avoid outright factual errors an academic will sort of inch toward it.
I'm probably over-interpreting what you were talking about, which seems more like a general observation that popular understandings of history are usually wrong (which has a great deal of truth to it as well), but, well, there it is.