> Really? We've got a lot more data on COVID than we do on the vaccines.
Sure, but we don't know much about long-term morbidity tied to COVID infection, or exactly how many people it will get in the end. Even if I've got it all wrong--- the vaccine is riskier than our current data implies in the age 24-30 group, and fewer people from age 24-30 will get it because things burnt themselves out earlier-- what about the risks of long-term morbidity from COVID-19 infection in this group? Even that alone dwarfs likely vaccine risks. A whole lot of people are getting hospitalized, and even only 5% of them ending up with some degree of long term disability is daunting.
There's big error bars all around, but they largely don't overlap, and COVID has profound downside risks.