I am talking about the opening phases and lynches where there is little to go on. If there is a reason, then zombies can wait. Otherwise, shoot them when there is little to go on or evidence is similar between two parties go for the zombie.
That is CAWZ doctrine. And it worked very well for a while. The key point is punishing those who do not participate. By doing so, you get less zombieism.
Yes, but the other key point is that, if enough are zombies, they will get rid of the active ones, in an CFWZ (Coalition for Werewolf Zombieism). And then you would quit WW.