Apparently, some chinese smart TV brands have been doing similar things, but I wouldn't be surprised if most other vendors have caught up and used stealthier techniques.
[edit] Here's the news about those chinese TVs [2] and the original report [3]
[1] https://arstechnica.com/information-technology/2013/11/lg-sm...
[2] https://www.theregister.com/2021/05/04/skyworth_gozen_smart_...
