Aside from the philosophical arguments about what war is, AI drones don’t affect that, but may alter the balance of power in an air supremacy/dominance contest. They don’t have to completely replace manned fighters to have significant impact, but they may become an important contributor. Even if they didn’t always win a dogfight they could keep the enemy very occupied while other friendly forces perform their missions. Not to be trite, but they could be a force multiplier.