so, basically etherdelta could dump all of their 13M coins, right? they are the biggest holder, it is quite funny 
anyone?
No they're not. They dont have 13M coins. Stop spreading FUD. The 13M is the figure distributed to Token holders.
well etherdelta received a lot of ebtcnew, do you agree?
Ether/Delta only received ebtcnew from people who deposited it into their smart contract.
Question is: Did the dev really airdrop eBTCnew to any smart contract address?
They AirDropped eBTCnew to all holders of eBTC who had it in a wallet in which they have access to the private key before the swap. It has nothing to do with the Smart Contract itself. The Smart Contract was solely to create and distribute the new eBTC to holds of the oldeBTC who had it in a wallet which they had access to the private key too (like MyEtherWallet)