To add to Wolf's really well thought out and written post, as kids a ringing phone was something you were expected to answer. Voice mail and caller ID were common by 2000 to the point of being essentially everywhere, but not everybody had it before then and that meant that if the phone rang, you HAD to pick it up. The only way to avoid it was to not be home.

Then when cell phones happened, as Wolf already said, Millennials had them so parents could keep track of you even when you weren't at home and calls were pricey enough that they were really for emergencies only, not for talking with friends, so they were just another leash for helicopter parents to control their kids with, like putting gps trackers on kids' cars nowadays. They weren't even smart phones at that point, so all they could really do was call or text.

And then jobs started expecting you to be available in your off time. You know the meme about Americans being available out of the office by cell phone during surgery? That exists because there was a period where bosses everywhere expected to be able to call you at all hours of the day to check your email or answer questions and work unpaid. It's gotten better now to some degree, but it's still definitely a cultural thing. I've heard plenty of people complaining about getting a call from their boss asking them to come in on their day off.

There was a short period of time where phones were cool and people did stuff like make custom ringtones, but I've had enough spam calls wake me up at 4am, people calling and "ruining the mood" with a gf or whatever, and even getting called by a parent who threatened to call 911 on me because I didn't respond to their text within 10 minutes that a ringing phone does nothing but piss me off now. I've heard that Gen Z/Alpha just permanently leave their phones on silent, and I completely get it. The act of privacy of simply being unreachable is lost in today's world.