If you actually read the full blog you'll realize it'll actually convince the right people to either adopt or avoid RN:

>The path of a world that is 100% native or 100% React Native is relatively straightforward.

but ultimately... hybrid apps are hard. Airbnb had a ton of infrastructure that needed porting over to RN that often required contributing upstream to fix issues they found. If you're starting from scratch you can get pretty far sticking to React/JS.

imo I can't imagine a startup using anything other than RN (or react-native-web) because of how quickly you can build things.