It was said many times:
They have very low fees, no responsibility of listing bad altcoins and no reputation, so they can list every fishy project and call it IEO.
But IEO´s power is in a strange exchange that brings a trust into the project, right?
well, I totally agree with your statement because maybe the IEO developers have planned to do a project scam so they prefer to do IEO at the P2PB2B exchange, there are many bad cases when doing IEO there sometimes the price after IEO cannot go up, it's better not to participate IEO at such an exchange place.
In the p2pb2b exchange, there have been many manipulations of the volume and the IEO, even if there are projects that do IEO in the p2pb2b exchange, I say it is just a nonsense project that has never developed at all, for example, bitwings, so far there is no clarity about sales in p2pb2b.
I think there are already many investors who no longer make investments there because they can return profits that would in fact turn into shitcoin.