(and signature design plagiarism)
It is not. I would shut down a huge chunk of this campaign as well and actually agree with the bloke on this situation for the most part.
Unless you think that Vadi2323 is actually promoting terrorism, this is either parody (may be fair use) or satire (probably not fair use). Given that Vadi2323 seems to be ridiculing the Chipmixer campaign itself - it could be considered parody. On the other hand, he could be targeting privacy/anonymization in general, in which case it's more of a satire. IANAL.
This.