This technology was used for good this time, but there's nothing stopping it from being used for evil next time. The fact that Samsung is even capable of doing this means you don't have control over your Samsung TV even if you do own it legally.
This is generally the purpose of the law. It's not like this is some life-or-death thing that can't be rectified. Samsung has no legal authority to disable a legally-purchased TV, and they would be sued to death if they used if for evil.
Technical solutions will never work because the exact same feature can be used for good and bad.