I seem to remember something similar, with Fluffi Bunni, a notoriously good *NIX hacker group.

I think it turned out to be mostly one guy, but he wasn't a teenager, anymore, when they finally got him[0]. I know that after that arrest, the group disappeared.

I think that some of the kids they are nailing for ShinyHunters actually ordered hits.

Maybe publicly going after the FBI wasn't such a bright move... They could have kept it quiet, and made millions, selling to bad guys.

[0] https://www.csoonline.com/article/510783/data-protection-flu...