They rightfully scapegoated Jack as an accomplice and set up the idea that the child-killer is still out there, which allowed for charges against Jason Bateman’s deceased Terry Maitland to be properly dropped.
It would appear that Ralph isn’t so sure about any of that anymore, and the episode’s final minutes got viewers to follow along with that train of thought.
The second half of the finale was partially spent showing audiences how Ralph, Holly, Claude and Sablo went public with El Cuco’s crimes without ever bringing up the supernatural creature.
But were they really lying about there still being a killer in the wind?