Factual error: When Cable calls his mother in Phoenix from his desk in Chicago, he only dials seven digits, as if making a local call.
Factual error: At the Russian funeral, the priest mentions the deceased's name as Nicholas Tsusefskaya, and describes him as a young man. The surname, however, is female. (The correct male equivalent would be Tsusefsky.).
Answer: He was just saying it pessimistically. Although, depending on which reports you read, 1 in 3 children are abused by their foster parents. In addition, many children in the system also get placed into several different homes during their childhood (since fostering children is not the same as adopting them), leaving the children to feel unloved by their foster parents.
I don't know the frequency with which it actually happens, but there are also neglectful foster parents whose sole motivation is the monthly stipend from the state, rather than a genuine interest in their wards' well-being.