A person does not have to show chickens to be a "Breeder". But, "breeders" do need to know, understand and breed toward the breed's SOP. True breeders have made a commitment to their flock to breed for improvement.
If you are talking to someone about buying chicks, they need to be breeding chickens that did not come from a hatchery, unless they are going to represent the chicks exactly as being exactly what they are. Meaning they are not SQ chicks.
There is nothing wrong with the "average Joe" breeding his chickens to have a few chicks to offer to the public, I have been doing this for years. But, my customers always knew that they were taking home "average Joe" chicks that we're going to mature into friendly little egg layers. But, I woild never consider myself a serious "breeder".