What makes a parrot a good "starter" parrot? I would say that all the parrots listed as "starter" parrots share attributes that would make them great companion animals not only for parrot lovers, but for anyone. First, they are small and apartment friendly. Second, they are affordable. and do not require a large investment in a cage. Third, they do not make loud obnoxious noises. Fourth, if they do bite, thier bite will not send you to the hosipital or leave scares. Fifth, I would say all the parrots listed are at least as intelligent as a cat or dog and can develop deep emotional bonds with thier human companion. I think very few people would be disappointed if they got a "starter parrot" from a five star breeder. Saying a parrot is a great "starting parrot" is a bad way of saying the parrot under consideration is likely to be a great companion animal.
This is not to say that Cockatoos, McCaws, Amazons or African Greys cannot be great companion animals. They can, but only for the correct person. To keep these highly intelligent animals as pets requires a lifetime commitment of dedication, patience, and time most people are not willing to make. Proof of this fact is the large number of these parrots in rescues.
I would agree that a person should get the parrot they want. I would also agree that what are called "starter parrots" deserve alot better than being used as a stepping stone or a "practice parrot" for the future ownership of a McCaw, Cockatoo, or African Grey. Anyone who does not seriously consider a GCC, Budgie, Parakeet, Cockatiel, or Lovebird, not as a good starting parrot, but on thier merits as companion animals is doing themselves a great disservice.