Also note that this was included in the message: "Fortunately, the militia units stationed in Isadril were not so easily fooled and have begun a guerilla war." (just an FYI devs, the spelling of guerrilla in the message is a typo, it should have two Rs)
You appear to be correct. I'll make a note to have that fixed, thanks.
I would also point out, regarding the wording of the message, that all it is stating as
fact is the
words and actions of the people in the region.
It doesn't say, "Stegman holds an ancient and undisputable claim". It says, "According to the officials, they read this document which says that Stegman holds an ancient and undisputable claim".
So what all the characters who received that know is
not that the documents were real, it's that the officials
claimed they were real.
Pay attention to the details. Nuance is important.