My body, my choice shouldn't be questioned; ever.
Especially when these novel drugs are still in emergency use and do not have sufficient studies or data. When there is a risk, there should be choice. And when the risk of an adverse reaction is greater, for most, then dying of covid you shouldn't be punished for making a sensible decision.
That being said on a very simple note those who are vaccinated are still spreading and catching the 'virus' so the passport makes zero sense. It is purely a punishment for those who have decided that having this injection is not in their best interests.
It is not ethical or moral to coerce someone to take a drug for someone else.