It is no more trolly than Fluid Aura, Blank, Shadewalker/Smokescreen(pre 5.0 emnity) used to be, it is an individual player that is the problem not the ability. If used in an obvious trolling manner and if they are even stupider for stating in chat report away it can be considered griefing.

Now we never had this many get rid of rescue threads pre 5.0, hmm makes you wonder why people are now using it more(for better or worse), could it be that SE changed something fundamentally with all the healers making people want to use it more /think (yes i'm not even being subtle).