I have my doubts, don't feel this takes proper account of cause->effect vs. relationship. Doesn't go into WHY fathers "choose" to have kids later in life, so t

I have my doubts, don't feel this takes proper account of cause->effect vs. relationship. Doesn't go into WHY fathers "choose" to have kids later in life, so things like economics, accumulated wealth providing easier access to healthcare and a lifestyle that supports longer life span. Also the autism bit is as much a function of the mother's age too, so did they compare old guys with young wives autism rates vs. same-aged couples?