I agree with your point. Actually I believe IEO's are just sugarcoated ICO's designed to be more attractive to investors but don't get rid of the risks associated with ICO's. With that in my mind, I'm afraid IEO's will be used as a tool for projects with malicious goals to further scam investors since these exchanges will not guarantee successful product delivery for every IEO it will conduct and I hope the community should consider that idea before they take any investment action.
This exactly! Sure, exchanges are doing an intensive check of each projects before it gets on their launchpads but even Binance cannot guarantee that a project delivers its promises. In the end the biggest difference between an ICO and an IEO, is just that an IEO guarantees the listing right after the sale.