Personal anecdote... after a 77-year old lady who was a family friend lost her husband of 45 years, I called once a year on her birthday to check up on her. At first she seemed to really appreciate it. But in the 3rd year, it took 20+ rings which concerned me. When she finally answered, she said, "Oh it's you! Oh how are you!!! You know, you can just text me!"

I took the hint. Think about that... a 77-year old was lecturing me to use the newer fangled texting technology.

In addition to the convenience of multitasking, the issue is that robocalls have made everyone wary of answering their phones.

ETA: forgot to add some color context. My personal rule is to never call anybody and only text. I only made an exception for the 77-year friend because I thought she was "old school" and would prefer a real phone call. I was proven wrong. I still chuckle about not seeing how pervasive the norms can change.