I agree with those saying that TVs are trying to become masters of everything. I definitely do not feel the need for my TV to be able to stream anything, or do smart this or that. I just want it to take in video signals from disparate devices, and display to the best of its ability.
Sure, some of those post-processing functions do assist in this aim, but, as a gamer, I also want to have easy and full control over what I want to be enabled, and not just a platform for the manufacturer to show off its tech.
I have recently replaced our main TV with a Sony KD-43x8309, which seems to do the job. However, the UI is very sluggish, and I'm sure this is all down to the TV having to kowtow to the inbuilt smart features, only very few of which I will ever use.
You cannot just 'Disable Smart features'.
Buying a new TV should not be like being forced to update Windows when buying a new PC, then having to uncover the options you require that are now well hidden away.