You are still missing the point.
I don't want a keyboard close to my couch or my gaming, wireless or otherwise.
I especially don't want a trackpad.
*****
I have a PC hooked up to my TV. It's as headless as Windows allows and runs Plex.
Which I control with my phone. No mouse no keyboard.
There's always a solution to suit you when using PC. If I set up a micro PC for my TV it would be set up as a Steam Machine. If I wanted Windows support I'd just set Steam to open at boot and then use an automatic timed macro to enable Big Picture mode.