Do kids draw in a private room, with no other kids around, and are blindfolded from birth until one day, they're given crayons and paper? Do they also not see pictures in books read to them by adults? They may not have taken an art history class and ingested an Internet's worth of Artstation and Greg Rutkowski, but they have plenty of outside influence.
Of course, their limited motor skills get in the way, but they're working on it.
The most stereotypical kid drawing is of themselves in a house with their parents. They do not need to sample other drawings to get to that.
Regardless, if we go back a few centuries, humans definitely demonstrated their ability to physically draw on paper, without sampling from sources other than their eyes.
But even if we were to consider that human eyes are effectively a way to “collect” samples, that’s another thing not taken into account in the aforementioned article.
Of course, their limited motor skills get in the way, but they're working on it.