Is it just me or is there something they aren't telling us?
They also probably got a few thousand notices they would be taken to court.
Their entire goal worked, though - make the app in private, have it blow up, and since the code is FOSS now thousands of people have it and it won't die. Forks can spring up and improve on it just fine - hell, the original developers can work on it still under someone elses repo - but they aren't liable for anything.