I saw a Facebook post the other day that claimed the best in breed German Shepherd was practically incapable of walking (a "desirable" trait of pure bred German shepherds is ridiculously short back legs). Whether that particular story is true or not, Crufts certainly does have ethical problems.
I have a pure bred German Shepherd, and it hasn't got short back legs
It's not a desirable trait.
One of the problem areas with both golden retrievers and German shepherds are their hips.
If you buy one, it's best to make sure you know the hip score of the parents.
One of the biggest problems isn't Crufts, but puppy farms.
I've known a few people buy their pets from puppy farms, mainly because they feel sorry for it, so they buy it. Then you get huge bills for medical bills.
The chances are, that won't happen if you find a responsible breeder.
We've always gone to a reputable breeder and seen both parents.