There is no reason to ever "blame" an individual GM, or for that matter the support staff in general, for failure to take action on something we report, no matter how certain we are that we're reporting is true/ correct. I know that sounds "dumb," let me elaborate.
When the hammer dupes began, I set about to report as often and accurately as possible to prompt support into finally ridding our shard of players known to the rest of us as cheaters. It didn't work. There was a lot of player speculation at the time as to why action wasn't being taken, but from what I could piece together from many conversations with a lot of folks, my best guess is that 1) support could only action a TOS or policy violation when observed or validated, 2) warnings tend to be issued before action, and 3) the TOS and internal policies were such that deviation outside set parameters would not occur based on EA legal (not part of our team or for that matter Mythic) review and policy. So an unseen dupe, an unseen script, an unseen anything really, would not be actioned. This despite the obvious in many cases.
I have no experience with IDOCs, but do not doubt in any way that Jack is absolutely correct, as these are higher payoff circumstances, unscrupulous players will cheat to take advantage. I can tell you it was evident at the Luna burn sites that folks there were cheating, despite any proof and regardless of no GM intervention. I checked several shards for Garth, and did check ours on Chessie with characters who track, and can say with high confidence that as higher payoff circumstances, we had inappropriate player behavior running rampant.
Today on Chessie, one of the characters previously monitoring our Luna burn 24/ 7, continues to wait at the Doom painting, scripting away, 24/ 7. Probably has done so for years, but my knowledge "only" goes back to April 20, 2009, when we began monitoring and observing. And again, support won't action the player. The problem is twofold, 1) TOS/ policy, and 2) lack of decisiveness in policy by the highest leadership on our team (in other words, don't blame the "team" either, this is one man). In this case specifically, the only action/ input the player will ever make is to steal the paiting, so unless for that brief moment in a four month span, support can observe and determine an invalid input (unlikely), this player will be rewarded and face no adverse action.
The bottom line is that our "problem" as players is behavior that shouldn't be tolerated but is, and leadership that accepts it. With a change at the top of our team, or even a change of view by current leadership, I'm not sure they can get major changes through EA legal. But there is no excuse for not trying. Just please bear in mind, this is in no way the fault of the GMs or support staff - at least as best I can determine, for what thats worth!