Exactly this. Except the new service is not released as part of MitID but as part of the new digital wallet app (den digitale tegnebog). This is a separate and "voluntary" app which is meant to be offered as a convenience. Except it isn't really voluntary when the app is introduced together with new regulation that requires you to verify your age in places where you were previously anonymous, and the only way to actually stay anonymous and retain access is via the app.