You can be mad at the AFKers which is completely justified and say content design is no excuse for peoples' actions. However, most people will gravitate towards the path of least resistance if the system allows it. This is just how a large majority of human beings function. Smart developers would have foreseen all the issues with current CM grind that results in conflict between speed runners, story runners, and now afker grinders. This was bad developing and I think even the developers have silently realized it.