
I think the after Crufts must have effects, and the corresponding upsurge in production by puppy farmers is worst in the already popular exploited breeds.
With a lesser known breed, one would hope that by the time the puppy farmers get hold of potential breeding stock, then the time has passed, especially if it is a numerically small breed with a core of very responsible breeders who are ultra careful about placement in the 12 months following a big win.
There are of course some rare breeds that are already exploited out of fashion,or due to advertising :( :(
If the Aussie won, I bet the number of puppy faremed Aussies wouldn't go up so much as more Borders of stocky build would be sold/bought as the next best thing!