That is true, but that is just half of the description. The first part is that Promoted enemies naturally spawn in the activity, whether a player is killed or not. Hypothetically, it could still trigger with a fireteam of three people if you were to run Extinction. I made a post about the interaction because points are essential to reaching higher tiers in Call to Arms, and it turns out Battlefield Promotion will lock you out of Extinction and the Reward Multiplier it applies if you run activities with it. In effect, it locks you out of the 1% tier.