It seems to me that you pay too much attention to this. Why do you need to know who they are sending these funds to?
It makes sense. Firstly, the possibility of tracking the movement of stolen funds to some extent makes it difficult for hackers to launder them, given that the entire crypto community is watching this, no exchange can make a deal with hackers. Of course, they can use mixers, but if they have not done this yet, then they either do not want or something is bothering them.