The average customer doesn't even know what spyware or telemetry is. I'd even argue that broadcast TV is dying making some form of video streaming service necessary which the smart TV accomplishes in a nice form factor.
It really makes more sense for smart functionality to be a different box so you can pick it independently
https://i.imgur.com/FlbKQEu.jpg
It was super trivial to remove. There is actually a removable panel on the back of the TV that lets you access it. Once I saw the antenna connector I knew what it was.
(I trust Apple more than Samsung. Except when it comes to remote control design.)
The average customer doesn't know what telemetry is. They usually know what spyware is, and, if they don't, they will find out very quickly. Of course there are exceptions like your favourite Smart TVs or Google (MS, Apple) products.
I think smart TVs are great, the chips that they put in the €1000 models are good enough for 4k streaming now. No more cheap mediatek crap. The only remaining problem that needs to be solved is long term support.