Now the story has changed as it only serious projects that would want to go through IEO's, we no longer would hold only the project body responsible for any IEO scam but the exchange, so any exchange that values its reputation and users should do a proper scrutiny about any project before accepting their IEO sales. For instance if an exchange fails multiple times with their IEO, it will drive attention away from them, that is why Binance still draws a lot of attentions because it has recorded more successful and profitable IEO's.
Binance has a good run of IEO success, because of the way they screen their IEO participants, we will see more successful projects on Binance platform and this is another feather in their cap, they started it all and they are good at it, the original is still the best.