Because crypto transactions are anonymous for most and no need for any information to be exposed to proceed transaction? As much as possible I don't want these kinds of comparison and personally, I don't want to say that it's likely. But to give you a light with my take on this topic regards to what you said.
So, is Crypto the next version of Dark Net, but in a more acceptable manner and something that involves the youth?
Acceptable manner in a way that it's all about freedom, don't forget that crypto's are now in mainstream.