> Having long term side effects doesn't round to zero, even for young healthy people. And vaccine side effects do.

I'm hesitant to just accept this as a fact. Vaccinations can cause very strong immune reactions in young adults that would otherwise likely suffer mild or asymptomatic infections. There are many surveys that query for a basket of sometimes unspecific symptoms such as "fatigue" or "brain fog" as a follow-up of a COVID infection. I'm missing that volume of surveys in the follow-up for vaccinations.