the "Smart" TVs of today are riddled with spyware and telemetry that provides a second revenue stream to the manufacture since 95% of the population is too lazy or uninformed or doesn't have the time to turn it off.
Yes, there benefits to the consumer in the form of convenience but it's not a paradigm shift like the switch from color to b & w. Also you could buy black and white televisions for _decades_ after the introduction of the color TV.
In the course of about 5 years "dumb" TVs have almost completely disappeared from he market. Maybe I'm just cynical but I have a hard time believing that it was because everyone just _had_ to have a TV with a buggy UI (in many cases) and/or loaded with spyware.