To add to that, there's still a chance to deanonymize Darksend transactions by controlling a large amount of nodes. I don't know how you're just incapable of accepting the fact that Masternodes by nature are centralized, since they are hosted on centralized software. What exactly do you not understand.
Again, talking about something different as if I had asked something about "centralized software", when I asked
what is the most important data exactly that the attacker (realistically, only the NSA) would collect? If you can't answer that, how can you think any kind of "centralized software" has any difference to anything?
Did you read what I said earlier, or are you purposely skipping over things? There is still a chance to deanonymize Dash transactions that have been through Darksend just by owning a large # of masternodes. The centralization part comes from the fact that most masternodes are hosted online on centralized servers, making it that much easier for the NSA to take control of them. Regardless of that, the hosting providers can take control of the nodes since they are the ones hosting the nodes on their servers, which means Dash's masternode network isn't just susceptible to government attacks, but attacks by regular websites/companies that the nodes are hosted on as well. Get it?
AKA
NSA takes over servers dash is hosted on online, NSA has a chance to deanonymize Dash transactions
Is that simple enough for you to understand? Wholly molly.