Basically the healer doesn't want someone to rage for getting aggro and dieing and does that to avoid the "wtf no heals?" Argument which would then get him kicked, so whoever gets aggro first, dies first, doesn't do their job, is at risk of being kicked out. Has nothing to do with being bad, good, or in the middle, just douche bags being douche bags, or healers that don't want to heal, or tanks that don't want to tank, or dps that don't want to dps. So when you called the other people out, they did the same exact thing and called you out for no reason, just to "get back" at you, when clearly, from what I'm reading, it's the tanks fault. It happens though, but with 6-7k dps the mob should be dead way before you are anyway.