Storm was being minc controlled via the nannites. Her objective was to kill all mutants and since she was one, she took that instruction quite literal. She was on autopilot and not even in her right mind, so she trying to commit suicide via her main form of attack, shouldnt be a slight at the writer nor was it something that went against continuity. We never saw her hit with the lightning, so its not like he made it canon there that her lightning does hurt her. I remember the hoopla when that issue came out but it was blown out of proportion and ultimately did nothing to damage Storm