This is over 2 hours long but worth watching about 1) what LG TVs collect by design and 2) what an attacker can do with it given that it’s a vulnerable Linux box with microphones. (Those two distinct aspects aren’t well separated in teaser clips.)

https://www.youtube.com/watch?v=6IFVTcM28KA

Other TV brands also have ACR (Samsung mentioned in passing here) and likely worse security patching than a serious Linux distro, so unless those are investigated and found clean, buying from another brand isn’t a solution.