Does anyone else find it strange that THIS leak can be tracked down in short order but we STILL don't know who the SCOTUS leaker is?
Not really. Knowing how courts/law firms operate, I never thought they'd catch the SCOTUS leaker.
First, The SCOTUS leaker was much, much smarter. They took photos of their screen with their phone, which meant there was no digital trail from a download or direct access. Then, they gave them only to a journalist, so you'd never been able to identify the leaker unless the journalist disclosed their source. That goes to the second point, which is that what the SCOTUS leaker did was not against the law. That meant there wasn't any pressure that could be applied to the journalist to force him to disclose that source. And finally, both the leaker and journalist were very well aware of all their legal rights so you weren't going to get any other leaks of self-incrimination.
This guy was an idiot. He leaked the documents online to a group of 30 people who knew who he was, many of whom were minors. All it would have taken was just
one of those 30 to leak that information to someone willing to report it, and he was doomed. Additionally, we know know that at least one of those people posted some of that in a different forum to which a bunch more people had access, including Russians. So that would have let digital forensic investigators begin tracking/looking for more clues to trace it back to that initial group of 30. And apparently some of the images he posted were photographed in a way that showed some of the background around his desk at work. Which means that once those photos went public, anyone who saw them and recognized any of the personalized details that showed in the photos would be able to finger him as well.
But it all really comes down to the SCOTUS leaker being very, very smart, and this guy being an idiot.