He did kinda answer your question with: "I ended up removing a lot of controllers from my codebase that was there just to service the react front-end. Having those controllers do not service as the "API" of the app. Specs for front-end apis and core APIs are usually quite different based on my experience"
Oh that's interesting. It won't need to remove the need for APIs (there are scripts and other clients, like embedded, that LiveView will likely not support) but cool.