I don't know how an exchange affect the price of cryptocurrency or more specifically Bitcoin. When an exchange is hacked, it would not mean that price will drop. And I don't think reading articles like this would help us gain a legitimate information about what is happening in cryptocurrencies.
In past we have already faced such situation, which no bout affect the bitcoin price, but I think that the current decrease in bitcoin price is not because exchange has been hacked. I think that it is only because of the affect of ETF