While I understand your sentiment, I just don't think connecting with most people by phone or in person is actually feasible. I keep direct text groups open to my immediate family members and closest friends, but I rarely text my sister-in-laws, and I almost never directly contact my cousins, aunts, or uncles. It just doesn't make sense to say "why not call them" as a counter-argument when we don't have that kind of relationship. As for sending a letter... most of us stopped doing that in the 1990s unless you were in jail or sending banking statements.

I've noticed the most active commenters on my Facebook stuff these days are all family members, so I have a ton of extended family that stays aware of what I'm doing through that. And of my ~850 connections on Facebook, I could probably delete 80% of those and it would be a more realistic picture of either 1) family or 2) people I actually know and have talked to in the last 3-5 years.