I used to go along this line of thinking, and had a "dumb" TV for a long time. I would spend hundreds of hours trying to get a PC/xbmc/kodi setup with a remote control to be comfortable, but always required a keyboard and mouse next to the TV. In the end it was a waste of time and I wasn't enjoying my TV as an entertainment device.
When I finish work, I want to sit down and just have everything work. I don't want to have to keep getting up and pressing buttons and messing around to get a myriad of supplemental devices of varying quality to work. I just want one single device, on the wall, with a remote.
And don't get me started on weird bugs that i can't even fix myself. Stuff like my dad's TV randomly outputting 1-2 seconds of audio of the last selected sender /while being turned off/. Audio only, with the screen turned off. Just a few moments. Nightmare fuel when its dark and you are sleeping in the same room.
Regarding data collection, who cares? Just get a pi hole if you really care about that.
Also you are describing a fault that can occur with a dumb tv.
EDIT: okay. I found this https://external-preview.redd.it/DcKcaASCdFkfM-eK5pOiu6DIOZb...
I have a samsung TV and I do not see this. Perhaps this is a region thing. I've lived in The Netherlands and the UK and not experienced this.
Think of SmartTV, microwaves, or every kind of consumer electronics in general.