Its a good thing Dash moved away from darknet and that Dash privacy solution is totally optional.
This is a big no-go in anonymity: it shouldn't be optional. This is like saying that anonymity on the public road is optional: you can put a bag over your head when walking in the street. True, but you will be easily spotted, with your bag over your head.
Anonymity shouldn't be an option, but it should be automatic, and *lifting* anonymity should be an option. This is like the old paper mail system: you can send an envelope and you don't need to put your sender's address on the envelope. You may do so if you wish ; you can write whatever you want on the return address if you wish. The contents is private too, unless one opens the envelope. So MOST paper mail was private in some sense. You weren't a suspect because you put your letter in an envelope or because you wrote "Jack Johnson" on the sender's place. Everybody put their letters in a closed envelope, so yours didn't stand out.
With a bag on your head in the street, you stand out as a suspect.
With e-mail, this failed. e-mail was open and clear for all routers and servers. When PGP came, as an OPTION, it wasn't generally adopted. Not many people use PGP. Some do, and I'm pretty sure they stand out as suspect.
e-mail totally screwed the privacy of paper letters. All the privacy problems that occurred with e-mail are due to the fact that privacy was only a option. Hell, ask Hillary ! If we're not careful, bitcoin is like e-mail. Dash is like bitcoin, providing something like PGP for those who "have to hide something".