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 dont think ICOs are killing bitcoin. Many ICOs success when landed in market and make their investor gain big profits. ICOs developers thats hold bitcoin will not selling their bitcoin because they need to build their project. I am believe good ICOs make cryptocurrency market more attractive with their new project