I'm generally of the same opinion, though I like being called when somebody needs something immediately rather than mucking about. I also enjoy a good call when I want to catch up quickly, not spend hours typing out what should amount to about 10 minutes' worth of spoken conversation.

But these sound like _personal_ preferences for _personal_ accounts.

In my work, and I'm sure most others, I don't have a great deal of choice of interaction methods, what I must be signed up to by email, etc.

Our own preferences are great and all, but I think that when we extrapolate those to the greater population and assume everybody is of the same mind, the blinkers to reality kick in. They're a huge problem that is endemic to the technologically-inclined because we falsely (and sometimes smugly) assume that our opinions and choices are universal.

Whether we might prefer or not prefer phone calls is irrelevant to whether or not people still do phone calls in the real world, and people have smartphones these days, so nobody should be surprised that smartphones are still used, especially in business, to place and receive phone calls.

Sure, mightn't be the top use case for a smartphone, but one would be foolish to imagine it isn't a big deal for a lot of people.