JMAP for Calendars, Contacts and Files Now in Stalwart

Anyone got a link to a better sales job on JMAP & friends?

It sounds awesome but the way it is intro'd here:

  Over the past few years, the IETF has been redefining how email, calendars, and contacts are synchronized and shared. Building upon the success of JMAP for Mail, several new protocol extensions have been introduced:

  JMAP for Calendars - A modern replacement for CalDAV and CalDAV Scheduling.
  JMAP for Contacts – A powerful alternative to CardDAV.
  JMAP for File Storage – A replacement for WebDAV-based file storage.
  JMAP Sharing – A modern successor to WebDAV ACL.
  JSCalendar - A clean, JSON-based evolution of iCalendar.
  JSContact – A modernized, JSON-native successor to vCard.

...gave me pause. A protocol I've never heard even though I hang out here for an hour a day, was so successful, that it launched 6 new projects?

Sounds more like the parts of the web dev that give me ick (new and shiny; rush to copy new and shiny in other contexts; give it a year; and all of a sudden only 1 of the 6 actually was successful)