So you are trying to tell someone else what they can and can't do with their exchange? Quit trading there... sounds like you have to if you want to trade those coins. Maybe there is more to it than a couple btc in volume... server load, maintenance times, blockchain storage, network overhead, i bet someone is paid more then a btc a month to maintain those wallets... alot of things go into cost analysis...
If you don't like it, why don't you make your own exchange?