Cackle has always been honest about their birds, at least they have been for the past several years. In this situation, I think it's the feed store that was pushing them as Ameraucana, or they were working off of some very old/outdated info.
Up until about 1978, Easter Eggers were called Ameraucana. But then the Ameraucana got official recognition as a breed. Hatcheries just never changed their breeding practices or marketing to conform to the new breed standard. They just kept doing what they had always done, and most still do.
ALL THE BIRDS/BREEDS ARE LOVELY. IT'S A SHAME THE CONFUSION CONTINUES AFTER DECADES OF EXPLANATIONS. WONDER IF IT WILL EVER END?