Yes, I just realized that a chance of 0 is worse than a 2/11 chance.
But why does that make ME a culprit all of a sudden? Actually, if you think about it, if you lynch a random person and that person turns out to be a civvy, then the mafia will kill another civvy during the night, so actually we will be WORSE off, because now we have lost 2 civvies, as opposed to losing one if we vote No Lynch. Yes, there is a small chance that we will kill a mod, but then there will be a higher proportion of civvies to mods the next round, making it harder to kill the second mod, and we'll still lose a civvy during the night. So either we kill a civvy, and lose and extra civvy in the process, or, if we're lucky, we kill a mod, lose a civvy, and make the choice of who to lynch even harder. Maybe we should be looking at people who are, you know, acting suspicious before we start murdering random people who are probably not going to be who youre looking for. Just saying.
TL;DR: No lynch means we lose 1 civvy, lynching a civvy means we lose two civvies, and lynching a mod means it will be harder to find the other mod and we'll still lose a civvy.