It's not just about the loss of funds, it's also about the fact that many teams paid them to host their coins and then were delisted.  Coinexchange and many other exchanges do not delist coins like that.   If Cryptopia go down, a lot of coins will have some significant losses to their plans, because they won't have an exchange to trade on anymore.  It will be good to see decentralized exchanges and free listings of coins which has been happening in the newer small exchanges.