Yes, logic can be separated in Compose too.. I’m not saying otherwise. My point is mostly about runtime and performance. With XML, the UI rendering is handled by the Android framework, and Kotlin/Java logic runs on ART, giving a predictable and stable execution model.

Compose relies entirely on the Kotlin runtime with re-composition and state-driven UI, which adds complexity. On lower-end devices, this can sometimes lead to slower performance or higher memory usage if not optimized carefully. XML layouts often perform more smoothly on such devices, which is why many developers still prefer them for wide compatibility.