[3pt14159]

It is a normal transition for childhoods filled with reading. I read about 10k pages a year until I graduated university.

For a hacker, it is normal to not subvocalize.

I think it is also one of the reasons that we hate meetings so much. An email can be written at about 40 wpm, and read much, much, much faster. So past 2 or 3 people, the dominant strategy should be text, unless sidechannel meaning is needed (where emotions are involved or whatever).