I never understood why cryptotraders and exchanges support ICO's, my reasoning is this: An ICO gets funded, then they do what, they SELL the BTC they raised for fiat and push the price dive on BTC, thus taking all those BTC out of the trade environment, anyone thinking that an ICO would reinvest into the exchange is naive. This hurts everyone, even the exchanges. You might say "Well the exchanges get fee's on ico" well that is true, but they are losing all future potential fee's on those coins, if they had continued trade on the market.
So in Short - ICO's are killing Bitcoin and CryptoMarkets.
I don't think ICOs are killing bitcoins. It actually strengthens bitcoins in a certain level since ICOs that create alt coins create competition against bitcoins. It pumps up bitcoin price unless there comes a true bitcoin killer. But as of now, there has been no no sight of it.