If that's your desire you are free to buy an NVIDIA Shield for your game console, an Android for your smart phone, any computer, a well known easily hackable router, etc.
Vote with your dollars.
Vote with your dollars.
I hate this saying. It's such a bullshit saying. a) There is no viable competition and b) It's incredibly profitable to lock people into an ecosystem, so even if you do "vote" with your dollars (hint: you're not voting) every company that you've now "voted" for has an interest in locking you into their ecosystem. The very act of "voting with your dollars" is part of the problem. This requires a principled stand and a demand, not more consumerism.
There are but a precious few of these that allow you to unlock your bootloader or acquire root access.
They are horrible. - Constantly hijacking HDMI from other sources - Remote has a sticky down button - Voice turns on and off for no reason and starts operating.
Switch off CEC (this should stop the HDMI jacking). The supplied remote is truly awful. I use either my home cinema amp remote and/or TV remote (but this requires CEC enabled) and have no problems. Check the r/ShieldAndroidTV/ there's lots of good/cheap remote recommendations in there.