> because diffing the Virtual DOM adds heavily to computation costs if you aren't being extra careful or as the application grows to real-world size, especially in mobile.

Is there some recent study showing evidence or analysis of this? You're saying the main root cause of poor performance is the diff burning up CPUs?

I always assumed applications run slowly because people are overusing global (redux) state and every state change is subscribed to by like 10 different components. And people making 5 network calls before their component meaningfully renders.