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"It’s currently required to enter any restaurants or public spaces and has been very successful in returning some degree of normality to the country.", there seems to be a link between the app and the normality in this statement, but there actually is no link between the two: an app like this may have some impact at some longer term, to lighten another wave, but it doesn't have any effect on the current re-openings.

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I don’t really follow your logic.

The Danish strategy is to test a lot of people and catch new cases early.

Requiring a green corona passport when entering various establishments where transmission can happen, is both a way to decrease the chance of transmission in these places, and to force more people to get tested, to hopefully catch asymptomatic people before they infect too many other people.

The logic is that it's not the reason for reopening, nor its success: it will be successful in a few months if there is no next wave, or if it is not as high as some other places where such a thing will not be in place.

The reopening is possible because of previous actions, and its result will only be seen in a few months.

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