Great post. Makes since. Makes me remember something I read that came decades earlier. It was a write-up about how the telephones were one of the worst things that happened in the home and the office. The reason is they create a sense of urgency forcing you to answer immediately for something that may not be important. They also put the caller in control of your time a bit. So, outside fun or profitable stuff, they're actually a negative compared to the letters and such that preceded them.

Lesson learned for modern world might be to send messages asynchronously by default with a note to call them soon or at some time range if it's extra important. I mean, it's what we do with email and messaging for sure. Let's just not forget that maybe the person on the other end doesn't want to answer or even look at the phone.