The Faux Lobster Salad

I mentioned Zabar's in this post. While they may have beautiful kitchen things,  the store apparently has not been very honest about their 'lobster' salad. Of course, it took a Southerner to figure it out.

According to this article in the New York Times, the lobster salad at Zabar's consists of wild freshwater crawfish, mayonnaise, celery, salt and sugar. Something seems to be missing, no? The discovery was made by Doug MacCash, a reporter from The Times-Picayune of New Orleans, who sampled the salad while visiting New York. When it tasted oddly familiar, Mr. MacCash checked the ingredient list.

Zabar's, facing many questions since being outed and believing the concept of crawfish would be confusing to New Yorkers, has since changed the name to 'seafare salad.' The concoction formerly known as lobster salad, while not exactly what it claimed to be, is apparently delicious (though expensive).

My question is why did it take 15 years and a southern visitor to figure this out?