If veracity matters, use authorative sources. Nothing has really changed about the skills needed for media literacy.
So having a good heuristic for identifying a broad category of non-authoritative sources would be useful, then?
>If you can't tell the difference, and it's entertainment stop worrying about it.
At the end of the day it's a philosophical/existential choice. Not everyone would step into the awesome-life-simulator where you can't tell the difference. On similar grounds one might decide on principle to consume only human-made media, be a part of the dynamical system that is real human culture.