Apparently people want healers to fall over dead at the site of a single DPS these days.
Healing, and specifically cross healing has always been the key to success in any team based PvP environment, when this became "new", or even worth posting about is beyond me.
Yes, Operative healers are not balanced at the moment for the most part, and I'm sure they will see changes in 2.4.
The biggest imbalance in healing at the moment (and since beta) are what tank/healer synergy is capable of. Guard and Taunts.