What did you expect? People that were interested in IEO already invested their funds and with the current market situation I am not surprised that they are not investing.
They rather collect more Bitcoins that some risky pump and dump tokens.
I think top investor aren't satisfied even by top exchange IEO. Suppose binance IEO, this exchange IEO projectalso dump because investor are interested in profits but not interested in project future. For good projects top exchange doesn't support new coin but also market is going down.