That said, I was recently in the market for a new TV and the models with the best image quality in my price range didn't offer a non "smart" version for less money or even the same price. As a result, I've got a TV with AndroidTV built in and it's actually a lot nicer than having to cast everything from my phone or PC to Chromecast (although that functionality is also built in).
Now, granted, when the AndroidTV bits become outdated as they surely will before the actual display does, I'll be back to plugging external devices into it but for now, there's definitely a lot of benefits to plugging that ethernet cable into the back of it.
I personally think they should just bundle something like a Fire TV stick or Chromecast with the TV
My next TV will be as 'dumb' as I can find, at the moment off-brand TVs you get in supermarkets still seem to fit that bill.
Personally, the only thing attached to my TV is a computer. I said previously that a computer benefits from the internet, so I suppose you might say my TV benefits from the internet?