I can certainly see circumstances under which the computer would sound like Blair. It actually reminds me of a 200AD comic... but I'm getting off topic.
One thing I think needs to be born in mind is that iconography has not been developed in SR to supercede the written word, simply that is possible for many not to bother with the written word due to the availability of other communication methods (such as voice mail), so they never develop the skill.
I don't think 2070 books are written in iconography, but your average man/orc/whatever on the street can get a book that reads itself, recognise a place to eat by a familiar sign (Golden Arches, anyone?), tell which door leads to a urinal and which to a pleasantly scented wonderland in the same way.... Oh. We can do that already you say?
My point is that iconography has not developed as a language, simply that the pressing need to be literate is lessened. Even today the number of people that read for fun is falling. How much worse in a world where audio and visual (and even tactile) media are so readily available?