IEOs are a different view and new kind of breath in the crypto markets. Binance started this IEO chain and now they don't accept all token sale modes. I don't worry as much as others due to obvious reasons.
for an exchange of binance I think investors will also continue to believe in the investment made. but there are a lot of new exchanges that are carrying out the IEO, it makes a consideration where doubts will definitely be on investor thinking.