Honestly you are becoming no different than a cold soulless Soviet hack in your responses. Not an ounce of compassion. And your interest is in saving the vaccines not in lives.
The fact is other countries have woken up to the risk on young people and places like Germany either give just one dose and the WHO outright recommends children not be vaccinated altogether:
Well now you have descended into ad hominem attacks on me.
The facts about this myocarditis, are that it is very rare, and that it is very seldom serious, even when it does occur.
COVID does far more frequent, serious damage, and our vaccines are effective at preventing the great bulk of that - but you don’t seem to care about those real, and much more numerous lives.