Hatcheries are fine. They sell inexpensive birds that are generally healthy, and that's what a lot of people want. They don't care what color the legs are or if the hens weighs in at the correct size.
Hatchery birds can vary in quality by breed. The occasional hatchery bird might be quite nice. Most aren't showable birds, but many people don't want to show, so they don't care. A heck of a lot of people can't even see th difference.
Like my neighbor who insists that his 20 pound short haired terrier mix is a Papillon and looks identical to my 6 pound show winning Papillons. To his eye, he can't see any difference.
Buying from a breeder, you have to know what you are looking for. Quality can vary. While looking for my foundation Swedish ducks, I went and looked at 2 different breeders, who claimed to be selling show stock, yet had horrible Swedish ducks. Well, darn, upon questioning, they admitted that their ducks had come from a hatchery and they were trying to "breed up".
So sorry, but if your breeding stock came from a hatchery, you are going to hatch out hatchery quality chicks for many many generations. It takes a very long time to breed up from a bad start.
I have purchased Swedish ducks from a hatchery and some that are show quality this year. They might as well be a completely different breed they are so different.
The show birds have better markings, better body shape, much better temperaments, much better feed conversion. And they cost a heck of a lot more.
The hatchery birds are all going into the freezer. Which is what I bought them for in the first place. Because the show birds are a bit costly to put on the table.
I would never sell a cull to anyone who wanted to start breeding or who wanted to show. Culls go into the freezer.