Depending on the prominence of the user, that could have been further coerced as a fact or reference, and/or inferred as factual if enough people agreed, in the next training session.

Upvotes as truth-confidence scores, what could go wrong?

Ironically some iotas of truth can be outputted directly, but if the most explicitly articulated reference is by a (non power-) user on a forum in a comment, it will be sourced as anonymous/eponymous wisdom (unless suffiently coerced)