> old modes of thought obsolete

I would say all modes of thought. Again, "Difficulty thinking or concentrating" and "Trouble learning new things".

> A generation which grew up fetishising those things

A generation? One generation? Which generation specifically are you saying fetishized thinking, concentrating, and learning new things?

> Or to quote Socrates on the invention of writing

You have to go back 2500 years to find someone else to dunk on? And do I need to point out that our knowledge of Socrates is based entirely on writing, mostly the writing of Plato, which you quote from and which consists of semi-fictional dialogues, thought experiments, not pure historical transcription?