He has, naturally, several agents whose job is to hang out in cafés and report to him on the political moods of the city, including bringing him copies of pamphlets legal or otherwise.
Vigilantio: I am Vigilantio, a member of the Mendev Lay Inquisition, who have no authority to patrol the streets fighting enemies of Iomedae, but decided to do so anyway.
Guardati: I am Guardati, an officer of the City Watch in the country of Mendev, the most Iomedaean country unless you are counting Lastwall, the place Iomedae actually likes.
Vigilantio: I am the most Lawful Good. The Lay Inquisition works for Iomedae and she only didn't Select any of us because she is too poor to.
Guardati: I am the most Lawful Good. The City Watch works for the Lawful Good Queen and she only has to Behead a few members each week.
[...]
It takes him until well after he's done reading this one to realize it's not actually about Mendev.
Wait—
He Scrivens in the lower margin:
Hulrun: I am Hulrun, the Inquisitor of Mendev.
Scribulus: I am Scribulus, a Vile Scribe of Cheliax.
Hulrun: This Pamphlet is filled with Vile Lies.
Scribulus: This Pamphlet isn't even about you.
Hulrun: I am not a Lay Inquisitor. In fact I am Duly Empowered by Holy Iomedae.
Scribulus: I use Foreign Countries to make Allegorical Satire about Cheliax.
Hulrun: Also I have never thrown anyone into the Raging River. I had them Burned Alive instead.
Scribulus: What??
Hulrun: Everything else is True though.
Publishing this in Cheliax would be completely pointless, but he's tempted to do it anyway.