I don't know, there's been a lot of stuff since 2014.
In client-side React we've seen stuff like react-query, mobx, etc which weren't there a decade ago. Back in 2014 everyone was still using redux (ugh).
Or Svelte and SolidJS which have brought massive improvements in performance and reducing JS with signals, compiler, etc.
Meanwhile MPA people are redefining the boundaries of work by marrying the frontend to the backend. They are doing some big re-architecture type stuff, and it is very interesting, far more interesting than React Query being the better Axios. If I had to lead with an argument about interesting changes on the SPA side, I would've lead with the ongoing improvements to CRDT libraries. It's niche but there really isn't much of a revolution going on otherwise on the SPA side.
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.
Oh my God! That just sent me into a mid life existential crisis for a moment.
The ROI proposition of MPA/hybrid becomes really meh.