This case happened in the county I reside in and my sister-in-law is an attorney for the county in CP, although this was not her case directly. I can tell you what led to this: The COVID lockdowns! They stopped doing all the usual home visits and follow ups because everyone was too scared to do their jobs.
This case was a horrifying failure of the entire system that up until that point had fairly decent results for children who end up having to be taken away from their parents and later returned once the Mom/Dad clean up their act.