Sure, I definitely want to use a web-browser on my TV with a remote control.
On mobile I'm not the kind "I need an app to access that service", but on TV, where I consume most of my YouTube content, I DO need an app. Because otherwise the UX will be an absolute nightmare.
I'm not arguing against specific UX, i'm arguing having something as "unsmart" as a TV embed a computer system you don't control is overly dangerous and can lead to undesired side-effects such as random advertisement popping up, or remote hackers accessing your TV's microphone/camera if it has some.
Be sure to let us know how Newpipe fares on your "smart" TV :)