The movie set off a long running obsession with prodigy kids who graduate college in their teens or younger. We had that TV series about a kid doctor for example in the 80s or 90s - I can’t remember. Moms were buying headphones designed to be played over pregnant bellies and other nonsense like that. I think the fad died when the first batch of kids turned out to be just as smart (or dumb) as the the rest of the pack.
There have been experiments, I believe, where they have found that newborns will recognize their mother’s voice out of a selection of that and other women’s. So they probably hear something in there. Maybe it’s just insufficient research.
I'm not saying Mozart was an example, but his brilliance as a musician, playing before crowned heads, was an accomplishment for a four-year-old, but nothing of note for a young man or even a teenager.