I agree with you that the Netflix UI is superb for browsing, however I have one major gripe - on Android TV they broke the back button.

I had to hardcode a kill app shortcut just for them.

For all other android tv apps that I have been using so far, the back button works normally, exiting the app at the topmost layer. However, repeated clicks of the back button in netflix UI just re-triggers the menu - part of their dark patterns to make it harder to quit the app...