The addiction of CPS agencies to federal crack is to blame.
If CPS agencies didn't receive federal funding for kids in foster care, they would blow off ridiculous busy-body reports of "neglected" kids walking to school or the park or wherever by themselves. They'd have more serious concerns to spend their limited funds on.
But now, since federal funding is at stake, the default position of the CPS agency is to use any excuse to take kids into custody so that they can draw from the federal pig trough.
What was meant for good (federal assistance to CPS agencies) has been turned to abusive evil purposes.