This is low-effort content.

No mentions of Briar, Tox, Wickr, Wire, XMPP+OMEMO, irc+tor etc which don't require you to link your account with phone number?

Or failure-resilient mesh networking over p2p links like Babeld, cjdns, B.A.T.M.A.N+OpenWRT etc. in the absence of reliable external internet connectivity.

The balkans and eastern europe have a long and rich history of p2p internet & sneakernets, which sadly may have slowly been forgotten as everybody becomes locked into App-ified walled gardens of internet-dependent consumer trash.