I'm totally willing to buy that talking to kids is good for them ("massively positively" strikes me as overstating the case) and that screen time rots their brains and their ability to ... um ... I forget.

But, as a parent, I have experienced that children are born with a ton of individual personality that is highly noticeable within days. It would be pretty much defy logic (as well as genetics) if some sort of predisposition for intelligence weren't part of this.