DJI is just doing what any company would do in this situation.
They have sent employees to monitor this forum to gain info on where the real hackers are gathering. They have had some success but due to their own GPL violations they have been unable to convince the hosting site to take down the meeting site. The hosting company is pretty strict on companies following GPL rules and have therefore even after being contacted have not taken any action until DJI conforms to their own GPL contracts violations. In effect the hackers have been hacked and therefore cannot complain. In this day and age is anyone ever surprised when a Chinese company use other peoples code and ideas without permission?
Rob