What we need to think about is whether the something is a net benefit. You wouldn't suggest we needed to think twice if we were, say, sending girls to four-year undergraduate STEM programs at a rate 35% higher than the rest of the country, would you?

There are undoubtedly some cases where DHS is mistaken or overzealous and places children into foster care to their detriment, but given the prevalence of poverty, substance abuse, mental illness, and various other contributing factors, it is likely that the great majority of the cases involve children whose previous living situations were untenable. That means it's probably a net benefit, albeit one that reflects a sad reality.