IMO FWIW - it's a bit silly to erase the practicality of chickens for show. However, I guess that is very much just my view.I think it's stupid. It makes no sense to me that the standard is written to make the practice necessary.
Some things that humans have done to chickens so they are more showy, or will win at shows...if they diminish the chickens health, well being, survival, practicality.....seem a sad state of affairs.