1. SoS, Aetherflow, Energy Drain management are key to 'good' & 'high-level' play. Being dependant on BRD is a failing on the healer's part. If you need to rely on BRD and other players pumping out enough DPS to end the fight before you run dry, you're doing it wrong.
You don't know this for sure. Sometimes people are just taking too much damage.

Please don't assume healers aren't using their MP tools. WHMs in particular, because SoS is rather inferior to Aetherflow.