Extending VR to the web and to other sets of developers is great! However, I don't see any useful abstractions here besides a bunch of declarative boiler-plate

Extending VR to the web and to other sets of developers is great! However, I don't see any useful abstractions here besides a bunch of declarative boiler-plate. Creating something that allows more people access to a creative medium requires real abstraction, not just wrapping a bunch of Three.js API's in react components.