Allworth on Exponent and Ben Thompson (his co-host on Exponent) have both explained that Clay was in fact wrong about iPhone being non-disruptive because he did

Allworth on Exponent and Ben Thompson (his co-host on Exponent) have both explained that Clay was in fact wrong about iPhone being non-disruptive because he didn't understand the ultimate value of the iPhone, and got stuck in the hardware<>os as a single point of integration.