This is now the new trend, every exchange wants to do ieo no matter how shitty the project is. If you are investing in any ieo, consider it a big risk. If it pays off, fine. If it doesn't, we learn.
Yes, I also guess that it might happen. ICOs have shown that scammers are very inventive. They can deceive exchanges and prove they are reliable. People can lose their money again. In my opinion, it is better to work with the existing cryptos which managed to prove: they will not vanish from the market and they will not diee even when the worse times can come.