Comment by OJFord

> The people who grew up with phone calls and who like to "hop on a call" to work out issues are all aging out. They are in their fifties at the youngest, if not already retired. It's my experience that far fewer younger people reach for the phone as a first means of contact. It's not preferred, and they try to avoid it.

That is not at all my experience, and I'd correlate it more to junior/seniority than age directly. I think perhaps more junior there's a temptation to screen-share (screenshots over pasted code/errors too) to show how confusing something is, where with experience you're more comfortable asking a question(s) in text and understanding & applying the answer(s).