The blurb above says that the TVs uploads screenshots when viewing antenna and hdmi input sources, which is what most people are reacting to here. The actual article is paywalled.
However other articles go into more detail and note that only a few KB of data per hour is actually uploaded, so the TV must be doing image analysis locally and uploading metadata only.
Right, but 480K per hour clearly isn’t going to contain a bunch of 4K screenshots, so it must be doing local analysis.