bc there are a lot of android tv apps that are fantastic that don’t have ready alternatives on Linux for htpc usage. Clipious comes to mind, for instance. Having android tv apps available through Waydroid bridges the gap in functionality until native alternatives can replace them.
Currently someone has a an unofficial build. As far as I can tell, there are no plans to implement this or something similar upstream. https://github.com/supechicken/waydroid-androidtv-build