<I'm not a linguist, please don't laugh at my elementary knowledge> I only knew Noam Chomsky from his political thoughts and knew he dabbled in linguistics but

<I'm not a linguist, please don't laugh at my elementary knowledge> I only knew Noam Chomsky from his political thoughts and knew he dabbled in linguistics but never knew what exactly he contributed to in this field. I only found out recently (while reading The Story of Human Language) that he's actually huge[ly disruptive] in the field and came up with this line of thinking. That language isn't just an expression of culture or of general intelligence but is genetic. His justifications were that 1, in cases where children were isolated from outside contact from birth, once reintegrated at an older age, they can become "generally intelligent and cultured" but can fail to ever learn a language which is very peculiar. 2, that culture can be wildly diverse but there are no non-speaking human groups just like there are no non-reproducing human groups. And 3, this particular case. Where damage to the brain affects very particular parts of not just speech but language without affecting other cognitive functions.