Even lesser known exchanges such as Cobak and P2PB2B have 17 ongoing IEOs each.
This will definitely lead to more scams and I think ICO scams are started rolling out in the names of IEO but the really unfortunate thing here is, this time those scammers are in action with the help of exchanges. Really bad for entire crypto industry 
.One thing that could work in favor of the IEOs is that almost all the exchanges have enabled KYC now and therefore we'll be having a fair idea about who is behind a particular IEO and where the money flows. In case of any irregularity, this makes the job easier for filing a lawsuit. But unfortunately that doesn't guarantee that IEOs will be scam free. Looking at the current trends, what happened to the ICOs will repeat with IEOs.
I don't understand how the IEOs can be listed in Korean exchanges such as Cobak. If I am not wrong, back in 2017 the Korean government had implemented a blanket ban on the ICOs. Now the IEOs and not much different from the ICOs, and they should come under the ambit of this ban. Or is there anything that I had missed?