One thing to note though, is even with the crimes against children declining, it is still a really high number.
According to the chart in the article, it is around 3,000 per 100,000 population.
In comparison, the highest COVID mortality rate in the US is New Jersey with 253 per 100,000. The motor vehicle fatality rate in the US in 2018 was 11.18 per 100,000 population.
Compared to those numbers, the crimes against children rate is extremely high.