I don´t see anything even resembling an "attack" by the dogecoin community on darkcoin. Only one dude asking (stupid? i don´t know) questions.
hyperbole much?
It wasn't so much a mass attack as much as it was someone who is incredibly active in Doge . . conducted many giveaways, added to publicity, etc . . came by and decided to put up misinformation in a clear attempt to discourage people by providing partial truths rather than starting a legitimate conversation.
Either way . . not a great way to go about things. Just seems like the wrong way to go after spending a few months promoting something you believe in only to turn around and bash things you don't.
Guess he got bored . . is the activity simmering in Doge or something? Maybe he got ignored!