True. A Yorkshire terrier used to be quite a sizeable small dog, larger than a Dandie Dinmont terrier. The GSD, as illustrated, used to have a level back, not dropped on it haunches. The Golden Retriever used to be golden; dark gold with white or cream 'feathers'; now nearly all are white. And what has happened to the present short muzzled breeds?
A visit to Cruft's soon reveals continuing, more subtle changes. Talk to breeders about what wins and you'll soon discover that fashion is still dictating. The cynic in me thinks that what happens is a well-connected breeder has bitches that throw pups which aren't quite to present standard, but the standard gets subtly changed so they go on winning