It doesn’t make sense to argue “oh what if this virus magically evolves to hurt children”. You need to propose a theoretical mechanism of action. Otherwise spend your time worrying about flu and tuberculosis which kill far more children than COVID-19.
> over the long run the set of all COVID-19-naive individuals becomes dominated by the very young (infants/toddlers), who have essentially zero risk of COVID-19 mortality.
I really think you may not have ever read the literature on COVID-19 in children. We should be shouting at the rooftops that kids are safe (and btw transmit less than kids), instead here in California we’ve closed school for a year which will - in children - far surpass the harms of COVID-19 by orders of magnitude.
"Babies under 1 year old and children with certain underlying conditions may be more likely to have severe illness from COVID-19."