Well I cant say if they are duped or not... but I will say this..
I have been doing bods now for about 6 months religiously. I have a few friends that help collect bods, fill them, and turn them in as well as a few other people that I do trading with. We take our rewards and split them between ourselves. Over time you accumulate a lot of bods (near complete sets) then one week you get a couple of the needed bods and whammoo you have a verite and val hammer... I know this because in the past 2 weeks I have gotten 2 verite hammers filled along with being 1 small bod shy of a val hammer. Now granted this did take some time trading and sorting out just what you need, but its not totally out of the question.
It is almost weekly now that we are pulling in a few of the higher end hammers including Gold, Aggy, Verite (still havent gotten our first val) and +30 +60 ash hammers. Not only that but we are getting mad amounts of Copper, Bronze, and POFs to boot, which we sell and use the cash to buy more bods from other vendors or purchase higher end bods we need.
I currently have 2 accounts, each account each of the character have .1 smithing and I am able to collect about 12 bods an hour ( takes about 5 mins to log em all in and do a quick run), sometimes doing this 2 - 4 times a day. Then one character being legendary smith that fills em and turns them in.
I agree there are a lot of dupes out there but dont throw all of us under the bus just because we have a high end hammer or two.