Simple and reliable pgp encryption will outlast tls 1.3, and rural users (quite reasonably) expect more life from their devices than city folks. No one is going to download and update with a 200MB image at 2400bps afterall.
pgp email is basically deprecated by the security community. Security people do not use and do not recommend pgp email. TLS is used by everything, and a version of it will be used for a long time, for example everything that will use IETF QUIC or HTTP3+ on top of IETF QUIC.