It's not just cities that struggle with the money. Ever since the OJ case and the CSI franchise later on, you have a lot of criminal defendants who will tell their public defenders to "independently test" the DNA evidence, only for the defense attorneys to basically respond "With what money?"
Atlanta's a big city and there are a lot of sickos out there. Some of those kids were killed because murders happen in a big city.
Other thoughts from the season:
1) When Holden returns to the cafe for the last time and one of the mothers asks him "Did you come in looking for thanks?", you tell he totally did come in for that, but read the room real fast and realized it wasn't forthcoming.
2) Hated the subplot with Tench's adopted kid. Too much of a coincidence and the child has too much of the "soulless kiddie psycho" cliche we've seen recently in Sons of Anarchy, Ozark, and others.
3) By contrast, I didn't mind Wendy's subplot. A lot of people now don't realize how frowned-upon homosexuality was in that time period. The girlfriend could easily lose unsupervised visitation rights if the ex-husband went to a family court judge and said "She's gay."
4) I thought Holden's quasi-friend who worked at the Omni was awfully abrupt with him in their last meeting, but maybe the show is commenting on the popular culture myth that the FBI has unlimited power to just do whatever they want. In reality, as we saw, their scope is limited and they've got all kinds of red tape.
5) For all of the media hype about Damon Herriman playing Manson in both this show and Tarantino's Once Upon a Time in Hollywood, I'd guess his screen time in both projects combined was less than 15 minutes.