This is nothing new. When did
Cryptsy ever state we do not stake coins? Some coins we do, others do not stake well. Some coins have bugs where even when you turn staking off they stake (XST). Some use so much CPU its not worth staking them.
In our Terms of Service
https://www.cryptsy.com/pages/terms28. Staking Interest Some Cryptsy wallets may provide staking interest rewards. Any staking rewards, conversions, snapshots, or likewise will become the property of Cryptsy. Though I wont say how many coins we keep in cold storage. Obviously those do not stake.
the least you could do is to separate the staking coins into multiple wallets to mitigate the potential issues with controlling the blockchain, or else you guys could control the blockchain doing double spends or forks at will, please take that into consideration