Earlier quoted context omitted.
It seems like if you take everything into account, taking the vaccine might not provide any benefit from men under 30. Any medical intervention must be beneficial to justify the use. If it's so and so, or equal risk, then it's not done. EDIT: The alternative is not stopping vaccinations. Men under 30 are given Pfizer.
The number of C19 fatalities under 30 in the US appears to easily exceed the number of vaccine-related myocarditis cases. The overwhelming majority of those myocarditis cases followed a benign course. Later Another thing to consider is that the myocarditis rate from C19 itself may exceed that of the vaccine, which would basically refute the argument against vaccination. (By all means, pick vaccines strategically.)
For children and healthy young people below the age of 30, Covid is mostly harmless (https://www.bbc.com/news/health-57766717). The risk of vaccination may actually be higher since the vaccines currently used aren't fully researched nor fully approved yet. The situation is not black or white. Vaccination may be very useful for people aged 50 and above but at the same time counterproductive for children.