It does look like it was hacked, but I don't have any experience with how a duplicate stream source plays out in a situation like this. Just that I can't easily imagine how misclicks or a bad setup would result in this particular series of events in something like OBS.
The twitter and kiwifarms threads are predictably useless (also this one, c'mon guys, use your brains, we're supposed to be better than reddit). According to the groypers Nick was outed as gay some time ago, but he prefers femboys over this kind of stuff. I'm not a Fuentes lore expert but I feel like I've heard this before so maybe it's true.
Kinda funny to see the right eating itself alive in the kiwifarms thread with neonazis screaming crazy antigay bigotry on one side, and groyper neonazis coping hard on the other.
But what I really want to know is how the stream key was stolen. I hope whoever did it comes forward soon. I feel like the groypers aren't going to be fazed by this and will just build themselves up with more conspiracy. It would be better imo to just slam Nick for his trash op-sec.