Ok, you decouple UI from business logic, have some state machine written in language X let's say that can compile ios, android, and wasm and allows for interop

Ok, you decouple UI from business logic, have some state machine written in language X let's say that can compile ios, android, and wasm and allows for interop with the kotlin, swift, and js. Even then, the view code is often the most complex and bug prone part of the app. Business logic is easy by comparison (in my opinion).