I would like to hear what Kosmost and Shaun have to say on the matter. So far there has been no official word from either of them about this here.
The announcement of this 'maybe/may not be' attack caused a significant dumping of coins while it was trending up again. That is not acceptable. The threat should have been proven beyond reasonable doubt before making a public announcement (on both here and reddit I see) and it should have been accompanied by proof for all to verify.
By all accounts it would appear that the threat had already abated before the members posted their announcement - all the more reason to privately inform Kosmost of the concern and let him handle it.
There are ways of dealing with things like this professionally, and although I'm sure the members who posted had no ill intention - it was not professional.