> as in you're actually still modern and not merely fine
Not sure what you mean by "fine".
There's nothing modern about client-side React. To get some perspective consider that more time has passed since today to the release of React in 2013 than from React to jQuery in 2007.
Quite a good number of React apps are offline-first. I build offline-first software for emergency services. That means one should maximize app usefulness despite temporary disconnection to peers or server.
The ROI proposition of MPA/hybrid becomes really meh.
