But for this example to make sense, it would have to be a member of that untouched civilization inventing a way to tap into television signals theirself in order to watch Bill explain combustion engines. Which, sure, they didn't invent the concept of a combustion engine, but neither did anyone else. And neither did anyone else figure out how to watch Bill in the first place.
So essentially they'd be passed that someone uplifted their whole untouched society.
Oh, and also their society has people who are constantly inventing airplanes and hydroelectric dams and waffle makers except nobody else can take them apart and see how they work or reproduce them.
So really, someone coming along who can invent, understand, and teach everyone else exactly how to make their own probably gets a pass, right?