Reading the comic and the comments it's definitely a cultural/generational thing since there seems to be an even split between those that think a phone call is for urgent business only and those that think a phone call is no big deal and perfectly normal.

It probably depends on whether someone grew up with texting or not. My family only just got smartphones this year and before that we didn't even have a phone plan with data or texting so from my perspective, calling someone up is perfectly normal. I have noticed that since getting a smartphone, I've been primarily communicating with text messages (which from what I understand is also a bit outdated).

As someone with an autism induced fear of phone calls, this comment section is really mean ;-;

This is why I call my parents weekly, so that phone calls from them are statistically less likely to be about dead grandparents. Still would freak-out when my same age friends call me, as the only time that has happened I learnt a good friend died of liver failure.