They only handed over 1 ip address. Because he/she explicitly said they were a customer, during a specific time period, and admitted to doing it.
Reddit is refusing to hand over any more because it’s all circumstantial. Example: I heard this ISP doesn’t give a fuck.
And Reddit has further evidence that handing over ip addresses will hurt the others because the film companies immediately started harassing the one ip address they did hand over, via a reverse lookup through t-mobile.