True, but rooting the device de-facto means breaking the trust-chain of the OS.

The inevitable outcome of this video is that TV vendors are pushed to harden the security and preserve the trust-chain, because part of the (valid) claim is that nefarious actors may break the security to use the device for spying on you.

With support from an actual journalist, it could be reframed to also emphasize the importance of controlled root-access to monitor and control the devices behavior.

But none of this was done unfortunately, and if I'm LG I don't want to see another video where someone reframes user-initiated voice-input for a web-search as spying initiative by showing some device-logs of the transcription process in parallel...

The trust chain is long broken since the TV is spying on you a the manufacturer is bragging about them "owning the glass and the living room".