[neosavvy]

I agree we aren't talking about the same apps.

I don't know if folks much consider vanilla JS / JQuery apps Single Page Applications.

I think (but am not sure) that all SPAs are built these days with Angular, React, Ember, Elm, Vue, or some other framework I haven't paid attention to.

Usually tied into Restful webservices that don't do any templating server side unless it's via Isomorphic JS. Maybe I got it all wrong though.