Bring on the TV firmware. Jailbreak your consoles. Use Linux or steal windows and use tools to completely rip its spyware out of it (e.g. https://revi.cc/).
Custom firmware anywhere and everywhere a device that someone supports with custom firmware is a feature worth researching.
The fucks are only going to jeep doing it. Protect yourself. Push for GDPR like laws in the US. California's privacy laws are headed in the right direction.