It doesn't have to be PGP specifically to satisfy the goal of strong keypair-based security finally having traction — does it? USB etc hardware keys can be use

It doesn't have to be PGP specifically to satisfy the goal of strong keypair-based security finally having traction — does it? USB etc hardware keys can be used protect accounts like Gmail, Coinbase, web hosting services, many more now. Fun fact: it's possible to receive Facebook user notification emails encrypted against your public PGP key.