Good meta point! When you think about it, there is no really good reason to believe anything posted to a forum such as this, from anonymous people you don’t know. Yet we often do. Touché!
Do we "often" believe things stated by anonymous people with no evidence?
I'd suggest that I neither believe nor disbelieve things that are unconfirmed. Instead, I consider that an anonymous person said such things and later correlate it with other observations.
It's not necessary to prematurely declare something (even to yourself) to be true or false.