Watching a dog that likes playing fetch is cathartic. I truly wish I had that level of purpose and fulfillment in my life.
If you make an artificial thing that really wants to do some specific thing, like a computer endlessly printing "hello world" millions of times a second, it's not surprising to see it do the thing it was created to do. I wouldn't say the computer "wants" to print hello world, so I don't see the dog as doing what it truly wants to do if it's a genetic predisposition human breeders forced into it. I see the expression of a society of dog breeders and people's idea of a game called "fetch" which was relatively easy to transition a species towards step-by-step using artificial selection.
Perhaps the obsession with fetching came with that?
Artificial does not preclude real. You can make the same judgement about just about anything selected for anything- Such as strange hairless apes artificially selected planning and building and strategy.