I feel like this needs pointing out.
We have two possible situations here:
A) Voltaire is scum, lying about being Tracker/Vigilante.
In this case, it's good that someone said the real one shouldn't claim, but when the flip happens, we obviously know we can't trust anything Volt said, it was all just pointless mindgames full of misdirection. So the twilight was worthless, and always would have been.
B) Voltaire is town, telling the truth.
In this case Robz and Liopoil have wasted time in twilight rather than Voltaire. Pointing out that if he were scum, he could be messing with us doesn't help if he is scum, because we'd all figure that out soon anyway, but it actually hurts us if he is town because we spent time arguing about it. And because it allowed Robz and Liopoil to make a decent amount of posts without contributing anything, but trying to look towny.
So either they don't help, or they waste town's time in what could have been a useful twilight. I'd agree with Liopoil that it always makes sense for scum to waste our time by fake-claiming, but I'd also argue that it always makes sense for town to take these claims as real until proven otherwise. Either we throw out the days where scum lied, or we waste all the days. I know which one is obviously better.
This twilight is a waste if Volt is scum, one way or another, but if he's town, it only becomes a waste if we don't believe him and don't take the opportunity to talk anything through while he's still around and this day is still fresh in our minds. Besides, how often is scum lynched on Day 1? 1/3 of the time? Seems like we should believe his claim and make use of the time as if it were true, and if he is lying, well we throw it out and we're right back where we were if we'd wasted the twilight anyway.