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.
Exchanges are purely interested in profit, in fact they more often than not list altcoins which are more likely to be pump and dumps.
In fact, ICOs on Bitcoin create metacoins which are more stable when Bitcoin and these altcoins were falling in price.