You’re also still paying a performance penalty for interacting with the virtual DOM in react. It’s not like react is just more complex to develop on, it’s also a noticeably slower experience in some cases (looking at you, Reddit.)

I’m also not completely convinced that the one-codebase ethos actually results in that much more efficiency, particularly given that one codebase is JavaScript. I’m sure there is a gain, but I don’t know that it completely offsets the costs of being so tightly bound to the JS community, but that could just be my experience