Earlier quoted context omitted.
I used a single letter stencil to learn the alphabet, actually, and nobody strapped me to a chair to watch or listen something 16h a day. Living inside a normal home with my parents was enough for the audio part.
The 16 hours of audio/video per day was a reference to being alive and hearing/seeing things for years before you actually could learn the alphabet. It was not meant as literally sitting at a screen with audio/video for 16 hours a day.
IOW, humans still learn more effectively with less information, because there are innate mechanisms which process this data continuously and extract new meanings from the same data. This is part of both intelligence and consciousness.
LLMs lack both.