As an established JS-only web/mobile/desktop developer, don't really understand why it is better than just React Native. On the landing page, there is no straig

As an established JS-only web/mobile/desktop developer, don't really understand why it is better than just React Native. On the landing page, there is no straight value proposition, but instead there is something like "Now use Y instead of X". I don't see why i should serve my app as XML, I can work with any backend technology i like using just React Native, as well as updating it instantly over the air. And the bottom table looks misleading too – no native elements in HTML5? why? ios safari surely provides native ui for HTML5 elements. no offline data for HTML5? this is not true, PWA exists