I guarantee they've lost more potential revenue doing this than they would have ever lost from anything that could be construed as piracy, though that claim still just flatly doesn't make sense to me.
Stuff like this makes me wonder how the dev team feels. Somehow I think they and Rockstar lawyers might have vastly different opinions. What a good way to alienate users, and kill off excitement on the dev team. If someone took my game and made it even more sandboxy and hackable and people invested hours and hours into goofy and fun gameplay? I'd be so happy and proud.
I don't get it Rockstar, I don't get it.