You misunderstand, they are talking specifically about encrypted communication for the new use case. Think of it instead as trying to replace email for unencryp

You misunderstand, they are talking specifically about encrypted communication for the new use case. Think of it instead as trying to replace email for unencrypted communication, you need a different use case as the user base is too entrenched. In contrast GPG encrypted messages are a small community. The fact that GPG is used for other things is fine, as it will still exist and can still be used for those things.