Why didn't I get banned for mining in Silithus?

I have probably earned 1000g or so from farming thorium in Silithus. I even wrote a guide on how I do it in General Discussion. What did I do differently that caused me to stay un-banned while others got banned? I would like to continue staying un-banned while also farming thorium on an ~*efficient*~ level
***UPDATE***
The devs have either increased the spawn timers on the nodes, or made the locations of the respawn random.
I just spent about an hour circling Hive'Ashi, and found the node in the SE cave at 45.5, 29.4 about 10 minutes in. I mined it and started a stopwatch. For the next 45 minutes, I kept circling Hive'Ashi, finding 0 nodes. After 45 minutes passed, I returned to the node I mined, but it did not appear. Either the node respawned in a different location (which would be a change) or the timer on the respawn has increased.
Since this is the only thing that has changed, I must have been unknowingly "abusing" this bug like the 200+ other rogues farming in Silithus and keeping track of the timers. Idk why only 5 people got banned.
***UPDATE***
The devs have either increased the spawn timers on the nodes, or made the locations of the respawn random.
I just spent about an hour circling Hive'Ashi, and found the node in the SE cave at 45.5, 29.4 about 10 minutes in. I mined it and started a stopwatch. For the next 45 minutes, I kept circling Hive'Ashi, finding 0 nodes. After 45 minutes passed, I returned to the node I mined, but it did not appear. Either the node respawned in a different location (which would be a change) or the timer on the respawn has increased.
Since this is the only thing that has changed, I must have been unknowingly "abusing" this bug like the 200+ other rogues farming in Silithus and keeping track of the timers. Idk why only 5 people got banned.