No, the first tablet was transformative. Here the quote means achieving something, not necessarily making it widespread.

A => B doesn't mean B => A. "If it's considered sci-fi, it's probably transformative enough" does not follow from his words.

I think in this case it does. Can you think of anything sci-fi that would NOT be transformative enough?

Three-dimensional chess. (Not really disagreeing. Just couldn't turn down the challenge.)

Video phones also turned out to be kind of boring, once they stopped being part of the shiny future and started being part of the present.