Yep....I think what is more common is for adults who get annoyed that we are "bragging" about our kids' abilities - even if all we're doing is discussing an achievement the way a parent would say, "My son learned to ride a 2-wheeler today!".

I learned to keep my ds' precocious learning achievements to myself....which stinks, btw because I AM proud of him.

Anyway, not saying this is what happened in your case, just my own experience with an early reader /mathematician.