We recently purchased a TV and chose one based on the lack of any Smart TV functionality. It boots in 5 seconds and doesn't try and join botnets. The future is stupid.
Security is a nightmare and I don't want to be profiled by anyone.
But you know, except for a "do you want to update now" nagging that made it unusable for the first 2 hours after I plugged it on the net, and a immediate "please accept this EULA so we can display ads" that I declined, the smart features have been nice since then.
I am still wary of a future "we are shutting down our servers, this TV will be no more", but not of much more.
It's very nice to connect to the TV by Bluetooth. It's nice to plug stuff there and browse the web too, but does not make all that difference because there's a Kodi machine just under it (right now I'm not sure I will keep the computer).