If you don't like the name "chocolate" or "fawn," complain to the APA and ABA, not the breeders. FWIW, I am not sure that choc was an acknowledged or well-known gene when the variety chocolate was first recognized.I fully understand what you are saying there. But I think you may have miss interpreted what smoothmule was saying. I may be way off, but
I believe they were just saying you would need to test breed it to see if it was dun or rec chocolate. I know for a fact Jerry has both dun and chocolate in his personal seramas, so recognized or not, it's certainly in them. Think the deal is, they are both virtually identical phenotype wise so a test breeding to a black base bird would be needed to see if it was one or the other.
Now on the old english thing, yes there are no chocolates that I am aware off. This is a pet peeve of mine. The oeg, and polish folks and several other breed groups seem to call everything chocolate or fawn to make it sound "prettier" Well when there is another color that is identical on the phenotype, it's always best to call it by it's genotype to avoid confusion. The end result is the very easy and readily available duns are getting the perks of the very rare and hard to find true chocolates. Just call 'em what they are and avoid all the mix ups.
Quite frankly, I am not sure that there are any perks for choc versus dun. They both simply create similar phenotypes. If either has the advantage, one could consider dun as it can create two phenotypes: chocolate and khaki, whereas choc can only create one phenotype.