Bendis doesn't have expertise with the Phoenix, re: AvX and BotA. The last writer to actually understand the nuance of the Phoenix Force was Grant Morrison. Rachel was completely in control when she wielded the Phoenix Force. She spared Galactus when she found out that the Phoenix Force uses unborn future lives as energy. Scott on the other hand uses the Phoenix Force "possessing him" as his scapegoat for his sins.
The Phoenix doesn't possess its host; it brings out their strongest character traits. Henry isn't having any of this Phoenix Force revisionist bullshit. Jean Grey-Summers at least took responsibility for her Dark Phoenix manifestation and killed herself.