But surely, it is not a natural law that the difficulty of obtaining an identification card will increase with a tightened domestic policy? What purpose would it serve? Those are all entities that might influence the process, and that might have an interest in doing so, but it is not certain that they will. At present, it is not particularly difficult to obtain one, and it is handled by the police authority. Indeed, most other authorities and services strongly suggest that you get one.
Further, there is a similar 'identity card-light', as it were, available for registered asylum applicants. It is not a full ID, and cannot be used in banks, et cetera, but it works as a proof that the holder is allowed to remain in the country while their case is being tested. It is mostly used during contact with the authorities, and can also be used for lower costs on some medicine and healthcare. Of course, it is considered void if the application is denied.
In brief, I do not think that it is such a terrible, terrible bother to get hold of an identification document that it is unreasonable to expect it of the public. Further, if you are 'caught' in an ID-check, and cannot identify yourself with documents or to a satisfying degree without, they are not going to haul you off to a black-site, or throw you on the first outbound plane they find at the airport. At the very worst, you will be checked over in the police station. Not a very pleasant thing to have happen to you, but unless they have real reason to believe that you are an illegal resident (which is not very difficult to disprove, even without proper documents), it is not likely to happen.
With law and security at risk, I do, indeed, believe it is worth hitting those groups, shall we say. More people might need to take the plunge and apply for proper documents, which will be a light to moderate hassle, at worst. That weighs rather light against the alternative. Particularly for a small country that relies heavily on internal order and its bureaucracy.