I think if you want a true breed and an animal true to type, you have to go to a registered breeder of that breed, otherwise it's a lottery as to what you end up with.
My bunnies are all adopted. One of them is described on her vaccination card as an angora mix (or something like that, one of the soft-coated little bunnies). She's a giant breed rabbit. How any VET could manage to not recognise a giant rabbit is beyond me. I don't know much about rabbit breeds, but as a lay person it's not hard to know that this enormous mega-bunny is not an angora.
If you don't know,I think people should just describe its appearance. Huge grey bunny. Or small black bunny with brown tips or something. When you are saying a breed, you should know what the breeds are. Sometimes people are honestly ignorant, other times they'll throw something in because it's a desirable breed and they want to suck people in.