The only good thing about LLMs that I can see is they're getting people to question this assumption.
Human communications are very often (in whole or in part) malign, misleading, deceitful. It's almost impossible to keep this in mind if you're not a liar yourself, but we have to, and not only in the case of LLMs.
I'm a journalist and I would say that "nonfiction" is about the most suspect category of communication there is, aside from "news"
No I wouldn't, it's not so simple. But readers should *always* take context and intentions and "cui bono?" into account, most of all for texts purporting to be "reporting facts."