An exploit should be reported, not abused. It really lets you know which side of the fence a person stands on.
There isn't really any point in "reporting" this. They knew full well what they were doing when they made the requirements of the roulette what they did, considering there exist other roulettes where you must qualify for every duty on it to be able to queue it. They also have the data for clear times on duties and I'm sure they can clearly see the disparity between ARR raids and the later ones. We shouldn't have to put 2 and 2 together for them.