The vaccination status of a person is irrelevant to the "danger" they pose to others
I agree that vaccination status is not an accurate estimate of danger.
However, vaccination reduces danger by a large amount (how large depending on many factors including how recently vaccinated).
The balance between freedom and safety in usage of common space: shops, transport, clubs is one which inevitably both sides will end up unhappy about. Humans pose a risk to others. Those who pose most (criminal) risk we lock up or in the US kill. Those who pose obvious infectious disease risk we quarantine. In schools space we require childhood vaccination because it protects all.
Covid is just another balance.
I think many people are indignant about this because it motivates people to get vaccinated. That is true, and it is probably the main reason many have for having such restrictions.
I am mildly against it for the same reason - it will be seen as coercion to get vaccinated which actually makes persuading the vaccine-hesitant more difficult.most of them can be persuaded without coercion when given facts in a non-confrontational way.