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.
IEO is a dilemma. It lies in the fact that on large exchanges it is very difficult to get into the ranks of investors, and if you fall then it is a very small amount. Which prevents you from making a lot of money. On small exchanges, you can invest a lot more money, but there are great chances to get losses.
This is the most negative thing for me at IEO.