He does build something: https://whispersystems.org/
Re:GPG and Me
by yellowapple on Wednesday February 25, 2015 @02:40PM
(#9109026)
Whether or not that something is better, however, depends very much on the use case. RedPhone and TextSecure are designed for very specific use cases (phone calls and text messages, respectively), whereas GnuPG is designed to be general-purpose and universal regardless of use case. Most jarringly, neither of those programs address email or file encryption/verification, and thus do nothing in GnuPG's primary realms of usage; by comparing them, you're basically comparing apples and crowbars.
Go generate a revocation certificate and push it to the global pool. You'll stop getting those disappointing emails.
But seriously, go build something better. I fucking dare you. We'd all be better off for it if you really did.