Ah-ha! The voice of reason rings through the dark night at last. Lol
Driving around my area you can clearly see you are indeed correct, but I didn't want to shut down any responses just yet. I've contacted the CSSB and am waiting for a response. And have already talked to my city building code/permit office and the local fire marshal on the subject. Both said it is in no way required or terribly common to treat cedar roofing or siding with anything but your usual water-based stain.
Keep in mind ya'll I'm in everett washington, 2 miles from the ocean, very damp, in a city with roughly .5 acres lots and no trees within 30 feet of my house. Fire on my roof is very low on my list of worries.
Can't give you any shingle advice other than don't worry about mohick. He's a serial cheerios-pisser. Not as bad as some others around here, though.
I spent a year in Everett - down on 75th Street off of Evergreen. Worked at Nord Door on the north side of town. Building is still there, but the company is not.
Didn't like the 9 months of drizzle! Ugh! Summers were beautiful, though.