> And what exactly would they use that particular access path for ?

Uploading the weeks, months, or years of locally-stored activity [0] data? Text compresses really well and local storage used to be very cheap.

[0] ...mic voice transcription, how often you use the thing, for how long, and a best guess (because of lack of time sync) at when, "automated content detection" logs [1], names of files you've fed to the thing, -if equipped with a camera- number of people in the room and interesting information about them, etc, etc, etc...

[1] ...assuming that that can be done with data loaded from the factory, which I kinda doubt...

Two things:

1) What I called "automated content detection" is apparently called "automated content recognition", abbreviated as "ACR".

2) That weeks, months, or years of locally-stored activity I mentioned can also contain historical ACR records. Given that the audio and video of what's being displayed on the screen is "fingerprinted", those fingerprints can be saved just like everything else picked up by the "TV" and uploaded whenever the thing next has Internet connectivity. The "TV" manufacturer will lose the "what are they doing right now?" aspect of the feature, but the "what have they been doing?" aspect of the feature will work just fine.

Directly related is this section of this Gamers Nexus investigation, but the entire video seems to be worth watching if you're not rather familiar with the topic: <https://youtube.com/watch?v=6IFVTcM28KA&t=26m47s>