Earlier quoted context omitted.
Android is Linux but it has nowhere close to the fully open source freedom of a traditional Linux workstation. This is why I carry a tiny linux laptop.
Phones are not PCs/general-purpose computers. Do you want your TV to be a general purpose computer as well? (Having put my family through a Media Center PC and TV remotes with keyboards/trackpads for several years, I don't recommend it.)
We love it. When we want to look up something we see in a video we just open a browser. We also use them to order food etc. No proprietary software required.