I'm thinking more the other way around. All the vaccines practically prevent hospitalization/death. But the AZ one is coin flip odds for symptoms, however minor

I'm thinking more the other way around. All the vaccines practically prevent hospitalization/death. But the AZ one is coin flip odds for symptoms, however minor. But even minor symptoms from COVID can have medium term damage (loss of smell/taste/lung capacity) that may not be recoverable. If you're part of the elderly high risk group, long term isn't that much longer anyway. It's the people with most of their life ahead of them that has to pick between the long term damage of COVID vs the unknown potential of long term effects from mRNA/adenovirus.