i think personally its better for a chi-baby to go to a new home and then get vacinated.. Some breeders are an exception i agree but in my opinion the baby can then meet their future vet and came become a bit more familiar with these surroundings with a new family ... rather than me taking them to the vets getting them used to being comforted by me then carried off and probably not seeing a vet again until he/she is spayed or neutered & being totally terrified at the time!
Itgets them used to you for support and comfort and to your vets too.

My puppies are regularly health checked every 2 weeks from birth im not a breeder who wants to chuck them in a crate and leave them there till their 8 weeks old and think hmm i can get loads of money for them now! It takes time to play and socialise with them! get them used to noises, people, children, toys etc. Soem breeders i agree dont care for the puppy and would rather have the money .. but every breeder and puppy is different no matter the breed in my opinion