RE vaccination...
USAHockey has been asking for full medical history for 10+ years on the standard release form for tournaments, including tetanus vaccination status. We've all signed the forms. Schools have been insisting on vaccination forever. Don't like the idea of mRNA for some (unscientific) reason? Get J&J. Or don't play. Your choice.
Just get your kid vaccinated and stop whining.
Personally, when my kid goes into the corner, in a flurry of heavy breathing and spittle, against some other kid, I will feel much better if I know they are both vaccinated.