Earlier quoted context omitted.
I refuse to believe we cannot have both.
Security must, by its very nature, prevent you from doing insecure things. This manifests as an obstacle to users, so they end up choosing the insecure route (writing down passwords etc etc). Decentralised systems tend to lose to centralised ones because there's no money locus for advertising, development or curation. It's not totally doomed; the popularity of Snapchat suggests there is demand for services that don't…
Better to have a written down strong password than an easy to remember password not written down.