Well I had hoped it might illicit reaction and get the story moving for a few characters. Ricky, max, Rachel and Robert in particular.
I also did not want to turn Lucas bad as a half measure would make her look bad. Shes in a position of why would god allow bad things? So if it has to be, then do a full job and erase all the pictures.
It takes Away consiquence from Ricky too so... I guess no lesson can be learned there.
It undoes the story as I think Ricky would listen to an omnipotent being.