If this has indeed gone on for months, they should get a bigger reward for being able to find the cheating loophole! Kudos
Edit: Just so people know, I am being quite cynical and sarcastic 
Also, collusion of top guilds in games has been around since battlegrounds in WoW began. Nothing was done then, I’d say the same outcome will arise here. Truly the only way it was lessened to an extent was naming and shaming the guilds involved. I believe that the Dev’s don’t see the true potential of guilt and conscience. Screw removing rewards… to be a part of a cheating guild…? No thanks