Honestly I think that the #1 factor in all nerf posts is map awareness and #2 is weapon availability. With no private crucible matches, there is no way for anyone to learn maps before actually facing online competition and so people are at a huge disadvantage going in. Only instead of realizing that they're getting destroyed because their opponents are intimately familiar with every map and where their weapons of choice are most effective, they blame the weapons instead of their lack of experience. The other factor is that a lot of people don't think the can ever get Thorn themselves because of the bounty and so they resent the fact that anyone else can use it. Last but not least, dying to the DoT infuriates people because they can't shoot back. No different that getting sniped, but again anyone can get a sniper rifle. The exclusivity of Thorn is the difference.