I understand that it seems easier to accept that a known paedophile is responsible for William’s disappearance (through an abduction) than an upper middle-class North Shore foster carer is responsible. Even though it is hard to imagine that anyone might want to harm a beautiful 3yo boy, I totally understand why some would rather think someone like FA was responsible. But the fact is, stranger abduction of children is extremely rare. While exact statistics are hard to come by, less than 1% of children who are reported missing have fallen prey to random stranger abduction.
The Truth About Child Abduction Statistics in 2022
However, if we look at things purely from a rational point of view, statistics show that the sad truth is that William is much more likely to have died in foster care as children in foster care are particularly at risk of harm. While the following data is from the US, Australian data can be expected to be similar. Note that children of William’s age are at the highest risk.
"Children in the foster care system are 42% more likely to die than children in the general population, a study published in
JAMA Pediatrics showed..... Barbara H. Chaiyachati, MD, PhD, a fellow in child abuse pediatrics at the Children’s Hospital of Philadelphia, and colleagues analyzed data on
children in the foster care system from 2003 to 2016 and found that there were 35.4 deaths per 100,000 person-years compared with 25 in the general population, with an incidence rate ratio of 1.42 (95% CI, 1.37-1.47)......
There also was a higher mortality rate among children aged 1 to 4 years — 50.7 deaths per 100,000 person-years (95% CI, 47.8-53.6) vs. 27.5 deaths per 100,000 person-years (95% CI, 27.3-27.7) among children aged 1 to 4 years in the general population..... During the study period, mortality rates among children in foster care remained steady, whereas mortality rates of children in the general population decreased by 2.5%, according to the study."
https://www.healio.com/news/pediatrics/20200424/children-in-foster-care
In addition, generally speaking, children are much more likely to be killed by a parent or acquaintance than by a stranger.
Child homicide perpetrators worldwide: a systematic review
So even though none of us know what happened to William <modsnip> , we have to question our assumptions and biases and consider that even though it may be easier to think that a paedophile boogey-man like FA has taken him, statistics show that it is more likely that he died at the hands of those who were caring for him. Of course, that's doesn't rule out that someone like FA was responsible, but we have to accept that it is unlikely.