Counterintuitively I believe there are more people reading and communicating textually than ever before. Way more! That would be good except they are doing it all via the Internet which is an absolute free for all of weaponized content, created for commercial or political purposes.
Critical reading and thinking skills are needed to navigate the internet.
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This book is kind of funny: [The Origin of Consciousness in the Breakdown of the Bicameral Mind](https://www.amazon.com/Origin-Consciousness-Breakdown-Bicame...) ... but it is good for hypothesizing about how consciousness has evolved. The relevant part to this discussion is when he writes about people literally being driven insane by the birth of writing. They were just unable to integrate the new influx of information quickly enough. Imagine your dog for example, learning to read. It would be quite the experience for poor Fido.
The printing press, in time, caused the reformation, the enlightenment, etc. But it was a bumpy road along the way.
My point is that, everyone having the internet in their pocket will have a larger impact than anyone anticipates today.