There are people belive that sights are completely useless as they are prone to get damage and broken, Some belive there is no need for scope to a rifle man as there are markman for such purpose, Some says scope is not needed as rifleman engagement zone is limited to 200ms at most, Most of these people with such ideas hold the higher brass and most of them had little combat experience or dont have proper idea of mordern battlefield from eyes of an infentry man, Such ideas are purely therory based on acadimical litrature which is again British ERA thinking ..
At least someone paying attention to details now ..