I could not agree more. You said what I've been wanting to say all day. From abduction to arrest in less than 4 hours is almost unheard of in these types of cases. With everything he did in that time, she was most likely gone within 15-20 minutes of being taken, if that. How many neighbors were home at that time? How many people rent in that neighborhood and have no idea what their neighbors drive? It's a big city (for Missouri), as big as mine, and I only know the car of my next door neighbor bc we've both lived here for almost 20 years, but most others in my neighborhood haven't been here that long. It's not the norm anymore. And IMO it's unreasonable to assume it definitely would have kept her alive.
Amber Alerts have strict criteria for a reason. I don't know the statistics off hand for how many missing children reports are filed only to be retracted within an hour but I know it's staggering. If an Amber Alert went out each time, the public would be desensitized in no time and they would be even less useful. I realize this case was different in that it was witnessed and they had a great description but that doesn't mean the system is broken or someone sat on their duff while a little girl was being murdered. Maybe there does need to be a revision to allow local level LE to direct issue alerts from the field but then that brings up a level of liability on each and every officer instead of the state level. There is a protocol and a chain of command so that informed, educated, trained individuals bear that responsibility and not the average beat cop (no offense intended, my BIL is a beat cop and he is a fine officer).
One final thing about the amber alert. There was another one the day before when a girl in Marionville, MO (?) was taken by a non-custodial parent. When I got the second AA, I thought it was a mistake bc I had already seen the other one cancelled a few hours earlier. If I was confused, others may have been too initially. It was a perfect storm and he gained advantage from that.
Also, I've studied predators for many, many years and although quick kills are unfortunately the norm in this type of murder, it's usually because they have more detailed plans for after the kill. He was prepped for disposal, not further exploration. This could not have been his original plan. This was his Plan B, no doubt about it. Do I think he's done it before? I think he may have attempted to do it before but I doubt he has succeeded. From the photos of his home and truck, the plate number was easily legible even from out in the street where the photo was taken. If he had done this before and succeeded, I think he would have been more controlled and slightly muddled up or even removed or switched his plates. I don't think he had gotten that far before so he hadn't thought that part through. And many/most experienced killers have some sort of kit prepared, yet he had to go out for tape. The experienced organized offender knows and plans every detail to the nth degree. He may have fantasized about it many times, even attempted it, but I'd be very surprised if he has completed his plan before.