That goes in all venues! IPO/schutzhund, AKC Show ring, German show ring....people breed to what wins. Same in the horse world. Problem is that in judging, there is human error and human failing - what they miss, who they know....sometimes to the exclusion of the performances they see.
At a trial one time - there was a dog who had many many flaws in it's routine - it was given a generous 92. The next dog up had a nearly flawless routine....the only criticism in the critique was for slight forging in the back transport. Score? 92. Same as the very faulty dog. Next dog - came off the sleeve at a stick hit. Score? 98.....It all came down to the field, hosts and handlers. In reality the first should have been about an 83-84, the second 98, and the third, being generous, an 85 S.
Quite a few litters were bred from the first and third males. Because of who owned them and their apparent quality as shown in their scorebook. Competition for those breedings in a club is often very political, and to stay on the right side of the helper/trainer/owner/host, you use their males to breed. And as a good club member, you buy your puppies there. This is not always conducive to good breeding. So even indirectly, the judges have impact on breeding.
Hexe Sch2, Komet & Kougar IPO1, Kira HGH, SG Bengal, Lynx v Wolfstraum ~ Ziberia IPO1 ~ ATB Basha, Kougar & Kyra, Fenja, Sch3s, Cito, Sch2, DangerRH, Csabre & Alice Sch1s ~Kelsey