What are you claiming is the "real problem?" I'd argue that the housing market in CPH is no more scarce than any major city, and the only reason it seems so to you is because you were seriously handicapping yourself by not optimizing your approach.
The fact that my landlord's ad received over 100 replies just indicates that there's a pool of "bottom performers" who are repeatedly trying to find housing by responding to ads despite the fact that they're doing some things wrong. Every new ad is going to receive a large number of responses from this same group of hopeless people. If they want to find a place, they're going to have to find out what's wrong with their approach and make some changes, just as I had to do.
The fact that my landlord's ad received over 100 replies just indicates that there's a pool of "bottom performers" who are repeatedly trying to find housing by responding to ads despite the fact that they're doing some things wrong. Every new ad is going to receive a large number of responses from this same group of hopeless people. If they want to find a place, they're going to have to find out what's wrong with their approach and make some changes, just as I had to do.