smart TV with its suite of 4K apps
I don't think anybody likes smart TVs with apps. They're always soooo slooooow it's insufferable.
The little devices like Fire TV sticks and Chromecasts are much better.
That said, people with a little bit of tech savvy are going more and more to PC solutions these days... I had a computer hooked up to my TV 15 years ago, but now my brother in law has one, several of my friends have them, and my mom wants one. These are all people who tried the special purpose devices and found them too slow... they're fine for special apps like Netflix, but are utter garbage for stuff like basic web browsing/Facebook.