I completely agree with the article, this price drop is because BTCC (bitcoin china) a popular exchange is shutting down on 30th september and once that is done with currencies will start recovering again. People are getting out of BTCC right now and thats the reason prices have dropped in the last couple of weeks. As BIll Gates said, Bitcoin is unstoppable and its not going anywhere, these price drops have occurred more than a 100 times in the past and they are known as "Dump periods", this is the perfect time to buy some more bitcoin/alt coins and there's nothing to be concerned about