Well it is a form of entertainment isn't it, as is all tele. Been a lot of dramas based on true events that have been grim but people are "entertained" by the story.
I'm not sure it's one I'll be keen to watch but I thought that about the Fred West one.
True crime stuff is popular.
They used to leave it a while though, although I suppose I'm thinking more the allegations being recent, I suppose it mostly did happen decades ago.