There was a very pretty girl who sat next to me in English class in high school, who I had a crush on, who grew up in an upper middle class family that was going through a terrible divorce.

Last I heard she's a professor of the Quechua language in Hawaii and lives alone with a large dog and has probably aged out of her fertile window. I can't prove that her family's divorce had anything to do with the trajectory of her life and her not reproducing, but on average there is a correlation.

Different person, but broken can happen across class and take different forms. However, lower income families tend to mean higher rates of child abuse and more single parent households. Single parent households have been linked to lower educational and economic attainment and higher incarceration rates. So while it can happen across the spectrum, it does seem to have some correlation.