what DarkCoin does is highly centralized
"masternodes" "does not sound like" something decenteralized, "it sounds like" something that creates a small chokepoint which could be used to deanonymize its users, like a server based CoinJoin but worse since you have to hold a huge pile of coins to run a server.
"Does not sound like" and "it sounds like" do not qualify as scientific observations by any stretch of the imagination. These are the ramblings of an individual who has absolutely no clue how Dash works.
Gmax invented coinjoin, the mixing algorithm Darkcoin broke, bastardized, and rebranded as 'Darksend.'
Obviously, his opinions are those of one with the highest possible levels of expertise.
His opinions could also be perceived to be highly biased as he has been jumping into (wrong) conclusions (intentionally or not?) and displaying extreme anger towards anyone profiting or intending to profit by building on top of previous inventions or even improving them that he himself (or his associates) have failed to profit themselves of.