I think we might agree, at least to a point, and are using words differently -- or maybe we are organizing information differently in our minds. Or maybe this is a language fail on my part. ....I can't tell.
Yes, NTs learn that social interaction is expected early in life by things like gazing into mothers eyes and paying close attention to all the social information the are exposed to during caregiving, but that is quite different than being born with the knowledge. They have to learn the knowledge, too, they just have a much easier time of it and need little/no explicit instruction....they are not born with that knowledge. THe distinction is important to my way of thinking about this.
I think some autistics may be just as drawn to social information at birth, but not able to make sense of/see significance in their early social experiences. (Which may or may not make them lose interest or develop an aversion to socializing as time goes by, or could just make them appear to lose interest because they don't learn from experience/successful information processing what to focus on/pay attention to .....an aversion outcome could be because of negative experiences related to confusion, frustration, or the pain of sensory sensitivities to touch and sound....which is in stark contrast to the positive experiences that reinfoce and facilitate the social learning of NT children, who experience comprehension/discovery and reciprocal understanding instead of confusion and frustration, and comfort/enjoyable sensory experiences instead of pain/discomfort).
It is like learning to play an instrument and read music. Nobody is born knowing how to play, everyone has to learn. Some people have to take lessons, be taught things explicitly, others can learn quickly and easily how to play an instrument with little to no instruction at all. Some can learn to read music with very little instruction -- merely being shown a few notes, and can extrapolate the rest. Whether it takes a day to develop or a decade, whether with or without instruction, a person is not actually born with the ability to play/read/compose music. (And the way a person learns, or how quickly or easily they learn, does not necessarily reflect anything about how much they enjoy playing music, nor how driven they are to learn.)
To clarify again about my personal experiences, because now I don't have any idea what message I communicated with my earlier attempt to clarify my own level of social interaction as a child.....I was an autistic child who often did not respond to his name, as if I were deaf. I was slow to understand the purpose of language, and even slower to figure out all the meanings/how to use it -- and the way I learned was very different from the way typical children learn. If people tried to get my attention nonverbally (waving a toy in front of my face or demonstrating how to play with it) I might just glance at it sideways and then ignore them. My mother noticed very early that I needed very little attention from anyone, and was happy by myself most of the time. But there were some interactive games I enjoyed, I liked to be involved when my parents would bake or fix things around the house, I loved being read to and sung to (on my terms, at least), I was very physically affectionate with my family and I liked to be around them even when I was not interacting with them directly or had absolutely no idea what was going on.