He's not the FBI so he can't write an Email to Amazon, DO and whatever masternode hoster and force them to give them access to the servers.
Nor does he have money to waste for such stuff; your arguments are simply invalid as you can't compare a forum user here to a powerful attacker.
On the other hand, you might as well ask DRK guys to trace a Darkwallet transaction and question them if BTC isn't enough....
PS: If you are really interested in the cn ringsignatures stuff you might read for example this from gmaxwell: https://news.ycombinator.com/item?id=7765455 - i am still not sure if you are just trolling and provoking or...whatever.
Is BTC not enough? Darkwallet transactions will suffice until a mergmined cryptonote sidechain with superior liquidity replaces it. Why must there be an altcoin to provide privacy? Merely to make you rich?
the question you should ask is about the elasticity of the utility curve of privacy - I have assumptions regarding that and that is why I think monero is the big thing
edit: even if he is trolling, his questions are valid - we do not know if bitcoins privacy is enough, neither do we know if darkcoins privacy is enough, it is about the utility of privacy.