Let's keep it real, the flu infection rate given by the CDC is hindsight knowledge. The real time "global statistics" for COVID19 are with vastly restricted testing. There's not really a valid comparison to be made at this point.
The other thing to remember is the lag in the calculations, the people dying now are the ones who were admitted to hospital a week ago.
I'm not so sure about that. Covid may grease the skids, but the vast majority of people dying have health complications already. Kids aren't dying. Teens aren't dying. 20s and 30s aren't dying in numbers. If Covid were directly killing, we'd see kids dying.
Regarding children, this is actually one of the many questions that is not fully understood, why do children not get so severe symptoms (initial thoughts were they might not even get infected, but this has been disproven by recent studies).