That is why it takes a dedicated breeder to get some from him and get the breed back up to SOP standards. He does not guarantee anything of his stock being show quality or being SOP. His Ameraucanas (as listed) are really EEs, because he said they laid green eggs and so forth.
Overall I think there birds are plenty healthy for your needs. I wouldn't worry to much. They have some breeds that are really nice and close to standards but some of the rare breeds are far from the standards.