You are correct, but as women get older, the chance of genetic defects becomes higher. The intelligence of a genetically nominal child wouldn't be affected.
People generally dont want to say this outloud, and most men are not aware the degree to which this is true.
Men having children later in life is associated with a litany of developmental problems too.
_The rate of Down syndrome for both maternal and paternal age greater than 40 years is approximately 60 per 10,000 births, which is a six-fold increase compared with maternal and paternal ages less than 35 years of age._