Yeah, this can be a generational cultural difference.
I mourned the death of my grandfather three separate times when my mother texted me "please call". Each time when I called back I learned something different:
We had to change our lunch plans.
There was an alarming local news article about driving conditions.
Nobody is actually this terrified of a phone call right? Besides the usual social anxiety anyway.
My father's phone doesn't even have internet, hell, they barely built a computer that could beat Nazi encryption back when he was born, he didn't even see his first computer in person until he was what, 50?
He struggles at testing, no way could he navigate a modern phone haha. So, phone calls are normal for us :-)
I have to call people for work to let them know when I'll arrive to provide the service. 3/4 of the time nobody answers, of those half either don't have vm setup or it is full and won't take an messages. The only people who do pick up are the elderly.
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getting a smartphone, I've been primarily communicating with text messages (which from what I understand is also a bit outdated).
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.
What I hate is the expectation that I am to be on standby for whoever calls me. All the time. Fuck that. Send a letter. Show some respect and have some patience. Communication with me is not a right. I'll not respond when I think its not important. And if you call me allot, it's never important. I do however get the heart attack feeling every time you do call.
I certainly take the comedic value from this. My dad is a classic technophobe. He believes the phone is there for emergencies only, and if a call between him and me needs to happen, he will get my mum to phone. With that, the two times in the past 8 years I have got a call, it has been an emergency... I dread the day he might phone and just go, "Just checking in to see how you are."
So yeah, there is a comical side to this, which I certainly see.