This whole idea of raising birds as per the "standard" is all good if you want to show your birds. But, as already stated, the true meaning of "dual purpose" isn't the same as it used to be! Just like raising dogs for show, most are not any good for what their original purpose was! The same can be said for chickens too. Chickens have been kept and raised by fanciers in hopes a judge will like how the bird looks! This in it's self, shouldn't be the only standard to which we judge our birds!!! Meat and egg quality have really suffered as a result in some breeds!!!
I'm sure there are some breeders out there that are trying to keep the birds as they were once breed for but, unfortunately in most cases, their looks take precedence over their actual intended design! There are many fancy birds out there that win ribbons at shows, but could you breed a show champ Rooster and a show champ Hen and get all show quality chicks (with looks as the intension)? No, of course not! Therefore, with this in mind, people cull (kill) their chicks heavily! To me, this brings to mind the phrase "If looks could kill"!