Even with the new numbers, covid has hospitalized and killed more children (in the US) in just about one year than polio was doing before WW2. The old numbers aside, there's plenty of reason for concern at the new numbers.
The equivalent data for Europe are at https://euromomo.eu/graphs-and-maps, which I find easier to use. You will see that the excess mortality in the 0-14 age group is actually negative in 2020 and marginally positive in 2021 so far (went down a bit earlier in the year and now is back up a bit).
Every year 800 kids die from drowning. About 200 kids die from the flue. Driving kills 4000. Suffocation 1500.
The risk to kids is very very small (especially considering vaccine can probably prevent almost all the above deaths), and certainly less than many other risks we tolerate.
(See also: https://www.skyhinews.com/news/coroner-state-included-a-murd... on official figures including anyone who died within 30 days of a positive covid test, even when their deaths were from auto-accidents, homicide, or suicide)
US just has stupid amount of violent deaths, either homicide or car accidents. 3 times more for vehicle accidents and 10 or times more for homicide than in other countries.
For example car accidents from million in 2019 Below 15 US: 21 Germany: 7 15-24: US: 139 Germany: 49
This is only counting mortality but there are also hospitalizations and prolonged illness. Fortunately it is very huge but it is not small either.