A better argument against chicken breast is that the commercial chickens have been selectively bred, fed, and treated with not-found-in-nature medicines to the point that they don't resemble a "natural" ingredient anymore. This would be in contrast to wild poultry like wild duck, goose, turkey, pheasant, squab, etc.
Let's not go crazy here. There are wild apples, wild plums, wild grapes, and metric tonnes of wild raspberries growing on my property. They all taste more or less like the supermarket variety. The main difference is that they are noticeably smaller.
The black raspberries in particular do taste much better though and are roughly the same size as store-bought. But saying that they have nothing to do with what's commercially available is a cheap shot.
