Again, as my view is supported by society, the medical, and the scientific community I do not need to provide proof. The burden of proof lies with you

Google search first two results: both in strong support of vaccination in young people

https://www.health.gov.au/news/atagi-recommendations-on-the-use-of-covid-19-vaccines-in-all-young-adolescents-in-australia

https://blog.ons.gov.uk/2023/03/27/assessing-the-benefits-and-risks-of-vaccinations-in-young-people/

it has become evident that also children could develop Long COVID after SARS-CoV-2 infection

https://www.thelancet.com/journals/lanam/article/PIIS2667-193X(23)00061-3/fulltext

Our results demonstrate that the benefits of the vaccine outweigh its risks for all age and sex subgroups we analyze in this study.

https://www.sciencedirect.com/science/article/pii/S2590136223000669

https://www.sciencedirect.com/science/article/pii/S0264410X22003292

Systematic review and meta-analysis of myocarditis and pericarditis in adolescents following COVID-19 BNT162b2 vaccination

https://www.nature.com/articles/s41541-023-00681-3

Long covid by age group

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7392393/

vaccination in children and adolescents appears crucial to protect them from the long-term consequences of SARS-CoV-2 infection

https://www.mdpi.com/2075-1729/12/2/285