I like all of the wordings he has made up for things that have been around for 15+ years.
Making a good messaging system seems to be an unusually difficult problem. People have tried, over many years, and the results - as we just saw - seem to be all round mediocre. In my view the main reason we have not "solved" this domain (as we've solved operating systems, databases, file systems, word processors, spreadsheets, email, data representation, etc.) are that the problem has been too arcane to interest enough engineers.
I believe every statement in that paragraph to be incorrect.