> The continued React Native tax of unnecessarily difficult upgrades,

My very first experience of RN was having to update an app to handle the mandatory change to 64 bit APKs

Which required a massive update not only to several dependencies but also xcode, iOS frameworks, the weird objective C caches that get smuggled into node_modules, _as well as_ all the rigmarole or making the 64 bit APK build work

It was completely miserable

I experienced the same issues but went the other way and migrated from React Native to React. Still one codebase but none of the issues. Performance was better too even though half the code stayed the same.