yeah that's reasonable, and a perfect way to do it is to go by age groups

covid is hurting/killing people who are weak, elderly, and immunocompromised. So covid is the bigger worry here, they should get vaccinated

young kids mostly don't even notice they have covid, and young people in general, ~<30 y/o, don't have any issues from covid. So the vaccine is a bigger risk, and the natural immunity they gain from getting the disease is more advantageous than the vaccine ever would be for their demographic