It's worth reading the affidavit and ask yourself what additional data you'd want to see to be convinced one way or the other. If you could subpoena any exchange / hosting provider what would you ask? Tiny problem: this happened more than a decade ago, so some data and even entire companies are gone.

https://www.courtlistener.com/recap/gov.uscourts.dcd.230456/gov.uscourts.dcd.230456.1.1_1.