reading a bit about him and the hack (which at some point was for example blamed on those Israeli brothers with connections to IDF hacking unit) i kind of not sure that he is the hacker ( and note that he is charged with laundering not hacking) - he in my view better fits the profile of the "investor"/"fencer" whose involvement would be to launder.
Sidenote: one of the reasons i don't touch crypto is possible laundering charge/suspicion if the tokens happens to had passed through unsavory hands/situation (which may be even unknown at the time) or God forbid 2-3 transactions after me the tokens get involved in terrorism/etc. - imagine as a minimum for example the "FBI background check" hell your GC/etc. will be stuck forever ...