I remember the first time I read about that concept and immediately thought “you mean the way we’ve been writing websites since the 90s?”
This is a poorly informed take. Your pop's dynamic html server side rendering has nothing to do with the problem of rendering DOMs generated by JavaScript running in a browser according to the client's state and leave it in a coherent state. Trying to pass off React's SSR for the same thing that was done in the 90s is like trying to pass off an Android app as the programs written for DOS.