A big difference is that they perma-banned anyone injecting code into that game.
That however included anyone using any kind of overlay.
Discord, teamspeak or ventrilo 'who is talking' overlay: ban
FPS counter from fraps: ban
GPU temp monitor: ban
Webcam view for streaming: ban
Eventually they reverted those bans. People use them on a rather massive scale, and they are very normal. No-one expects them to be banned.
Moreover, they gave no warning whatsoever.
This means a lot of truly innocent people got caught in the ban.
Discord, teamspeak or ventrilo 'who is talking' overlay: ban
FPS counter from fraps: ban
GPU temp monitor: ban
Webcam view for streaming: ban
Eventually they reverted those bans. People use them on a rather massive scale, and they are very normal. No-one expects them to be banned. Moreover, they gave no warning whatsoever. This means a lot of truly innocent people got caught in the ban.