The last TV I purchased I had to spend a $10-$20 premium over the smart model with similar specs (from a slightly more reputable manufacturer at that) just to get a non-smart model.
I've had the TV for about 5 years now so no information I could share would be too helpful. It's got a 1920x1080 resolution and seems to work well with the living room PC, that's good enough for me.
Personally I didn't want passive collection phoning home if, at any point, anyone connected it to anything, and there is also the possibility of connecting to open access points.
And, well, saw no reason for leaving around untrusted unreliable crud I couldn't remove. It was worth a modest markup to get rid of it.
The data mining definitely plays a huge part.