I am quite ambivalent to this feature. On one hand, if someone steals your TV, you can deactivate it. But
now there is also a benefit to having a dumb TV. Imagine if you have too old of a model, so Samsung decides to remotely disable your TV.
1. That it's even necessary
2. That any non-techie would immediately be against even unscrewing anything on their own devices
Sure, I'm glad to do this on my own devices. But those willing to has gotta be a sample size of so small, its no bigger a deal than a statistical anomaly.
The benefit this gives to having a dumb TV is that it makes it more attractive to thieves.
This is one possible outcome only. But I feel this is quite likely.
And you don't even need a public outcry about it. Just enough people to make a class-action worth it.