Having worked on developing an Android TV, I wouldn't touch one with a barge pole. If you think your phone spies on you, check out the data that gets shovelled back to google from the moment the TV is switched on.
The whole thing is hideous and I would give it a couple of years at most before personalised ads start getting shoved down to the viewer and there will be nothing you can do because you agreed to the Google licence agreement when you bought the telly - yes really - I'm not making this up. And if you don't agree to the licence agreement then you can't actually use the thing, or at least loose 90% of the functionality. Even if you don't want the Google bits.