I just apply the "Wikipedia model" to things like LLMs (and StackOverflow, which can be just as bad -but without the admitting error part).

I look for citations and footnotes. In many cases, accuracy isn't something that I worry about, as bad info becomes apparent, almost immediately. In cases where it matters, though, I may try a couple of verifications.

One problem with humans, is that we can be quite insecure, and will fight to the death to defend a provably wrong position, because we can't bear to be seen as in error.