Is it wrong to buy a purebred puppy?

[Tsukasa Buddha]

- "YOU MUST BY FROM A SHELTER OR YOU ARE THE DEVIL!" is silly because it's a solution that requires the problem it is solving to work; an excess of unwanted pets.

I find this objection to be a silly word game (ignoring the strawman). Why is it "silly" that a solution is relevant to a specific context, and it is not an eternal law across space and time? If course a solution necessitates its problem to exist in the first place, otherwise it wouldn't be solving anything, would it? Get Lewis Carroll in here.