Guilty until proven innocent huh. I don't like it and I'm not going to play your game. I don't see how us, in all likelihood, killing a potentially innocent tourist today is any better than cultists deliberately killing a tourist tonight. I don't think it's likely any of the cultists are going to slip up and say anything today, in fact, I imagine they're quietly enjoying this as you're doing their work for them. My vote stands.
For a lot of players (I'm assuming, at least), voting is the only power available. Wasting that ability on a No Lynch is something I've always felt is irresponsible, because it does nothing to help the town. Actually going after people and debating to try to find a candidate to lynch, even in the face of our informational disadvantage, we should be able to gleam some information (maybe it will be useful now, maybe it will be useful later- regardless, I'm sure it will be useful). If we're lucky, we get a cultist! If we're not, hey, at least we can study voting patterns (remember that, barring any special role shenanigans, the cultists in all likelihood no each other's identities).
Not voting somebody off means tomorrow is, essentially, Day 1 with one less tourist. We shouldn't hold out hope for a power role with a night action to swoop in and save the day, because them revealing themselves might not be in the tourist's best interests- which is why it's so important we do all we can with the traditional voting process. For now, why not start talking about your suspicions?
Our job isn't to keep Tourists alive. Our job is to kill Cultists. How do we kill Cultists? By lynching.
Yup. Also, I believe somebody posted some math for it earlier, but we should especially lynch today because we have an odd number of players.