Ferretinabun wrote...
The obvious response is that Ferelden does not correspond exactly to medieval Europe. Just because literacy was low irl, doesn't mean that is the case in Ferelden. I believe illiteracy is only actually encountered in the DA world when you teach Fenris to read.
However, that aside, historically reading was often considered a rather sociable activity rather than something you did alone (probably because literacy levels were low). Wandering minstrels, town criers, clergy, etc., would often read to groups as a pastime. That does, of course, still leave the fact that Anders' manifesto is controversial stuff, but then that wasn't a problem for Martin Luther and the Protestants in the 16th century.
The short answer is that I don't think low literacy levels is the barrier to the spread of ideas you might imagine.
It is precisely because it was controversial stuff that it didn't get spread around. Anyone who openly shows support for the mage cause would be hanged. The manifesto was obviously being spread under a false alias so Anders wouldn't be caught.
My guess is that, due to so many people not being able to read it, is the reason why he couldn't get enough support.
Besides, we are discussing Kirkwall in particular, not Ferelden but I'd guess that Kirkwall is as good as any example about the education levels in Thedas. There is the Chantry as a place for you to learn, of course, but who would want education from religious institutions besides those who believe and actually want to join the religion?
I never heard about any public schools who taught free of any religion while I was roaming around the Thedas world. People who are taught in free institutions like that since childhood are not as likely to become religiously biased as opposed to those taught by the Chantry.