I've been burnt by the non-Euclidian enormity of ExtJS, so I understand the desire for something simpler. On the other hand, when you leave the world of progressive enhancement and widgets (ie. jQuery), you find yourself needing a lot of common infrastructure and picking and matching that can be quite tedious (never mind dependency hell), which is something that react always had issues with -- and that seems to extend fractally, where it's not just MobX vs. React but then what framework/project setup you have on top of each of these choices. And now hooks.
Still, angular always struck me as going slightly too far into Java-land -- my Struts/J2EE/DI battle scars are larger than even my ExtJS mutilations.
And in between you've got VueJS/Vuex, which seems to move a bit too close to react at times, and EmberJs, which seems to move too slowly and/or without many people watching it.
I really want to go back to late-90s desktop UI development sometimes…