Any class that can do aoe dmg can farm bloody coins faster using aoe dmg.
When it is a raid going for celestials boss on timeless island you simple run in and do aoe on all ppl right before they start the boss fight. usualy more than 15 ppl dies from boss dmg in the fight and if you have the first shoot on them you get the kill.
I dont know if it is intended to be this way..
Ofc single target dps can do it too but it takes longer to dps on alot of ppl..