I'm positive that only people who missed out on DRK and/or who are mad for not profiting, say it is a scam.

Everyone can have their own opinion, but the evidence of the instamine is just too obvious for those who actually cared enough to take a look at how first few thousand blocks were mined.
Anyway, was it scam instamine or not - it does not even matter anymore. Dark is a success in its market cap.