I'm really, truly disappointed with BCX. I've been following this story the entire time, and DDOSing an exchange(Poloniex) along with extorting people(Monero devs) is illegal. This behavior is really childish and sad...
Don't worry he's bluffing.
I tend to agree, why expend energy on DDosing, when you are supposed to be able to destroy its bloodflow (XMR).