I worry about this too but I guess it all depends on tooling/debugger - in native land this days you trust compiler and debugger and even code is in ASM everyth

I worry about this too but I guess it all depends on tooling/debugger - in native land this days you trust compiler and debugger and even code is in ASM everything just works so in react land this still should be possible to deliver similar experience. Similar trends is in other declarative frameworks even on native such as SwiftUI - its easy to write complex gui but harder to debug and easier to shoot yourself in the foot. Its just harder to reason how declerative code will be executed in all corner cases and you have to trust compiler will do its magic. Overall for me it seems a lot of SwiftUI app feels much slower and even Apple developer from time to time shoot themself in the foot. We are just trading developer experience with performance and debugging.