They do breed a lot of litters - it's definitely a business for them.
But they are very much in the world of dog sports too. This is not a puppy mill in that regard - they prove their stock by putting schutzhund titles on all the dogs. Most of their breeding stock is at least a Sch2, and many are Sch3. In addition, most of them are koerclassed (Kkl) and some indicate hips have been checked ("a" normal).
I actually have more respect for people breeding proven dogs like this than those who just get an AKC championship on their dog and then breed thinking they have "quality".
But yes, way too many litters. I bet they sell most of their dogs to schutzhund people who are looking for a working dog out of German lines.
Melanie and the gang in Alaska