This was probably a cat whose owner neglected to brush the cat regularly and allowed the coat to be matted. The only other owner that usually gets their cats clipped like this is the former owner that learned how much easier it is to maintain a cats coat when it is generally short like this. It does help sometimes to relieve some of the allergy problems if they are not too severe. FWIW, the quality of work on that actual haircut in the picture is very good. That cat must not have hated the grooming process to bad to have turned out that well!!