My feeling is that Internet was immediately useful to most of its users. Cryptocurrencies have been a global phenomenon for close to two decades and still aren't.

> "What bothers me is that Signal makes you have updates every few days or something, and insist you use the latest version. And that means someone with a court order could say, 'Here, slip a bug into a version, ship it out, and make everybody use it,'" he warned.

Not that I disagree, but this is not exactly Signal's fault. If it really matters, one can compile Signal from sources and use that... but then "someone" could pay NSO to hack your phone.