I use an nvidia shield, and used the developer options to disable Google's built in launcher (and most other google related services). That's what it takes to keep your chosen launcher. I also used an app to remap the netflix button on that stupid toblerone they call a remote to act as a mute button, so accidentally pressing it doesn't cause me a minute of trying to get back to my content.

Yeah, I suspect Google pushes changes to the backend OS that keep breaking it on purpose, but at least we've got it to stick on our two TVs with a lot of effort and setting changes. Least worst option considering how pricy mini-PCs are, unfortunately.