It's plausible that scum waived to incriminate Thoth, though whether they would do that when it gives town a whole extra day phase is something I need to think more on.
It's also possible Thoth is scum, has no night vig, and NK'd Mago so he could push through the argument that he did use it but scum is conspiring to foil his role confirmation. I hesitate to believe that, though. Thoth was pretty firm that wylted was town even when the tide of the vote was going against wylted, and he was the second person to vote Kohai, fairly early in the DP.
Lunatic and whiteflame's roles remain unconfirmed and they are very much in the POE. I am putting banana aside for now. I agree with Lunatic that Chauffeur and Petitioner seem like a weak scum team -- especially considering that would mean town was loaded with an Inventor, day cop, Bodyguard, JOAT, Night Vig, Dead Voter, and Martyr -- unless Banana is a JOAT, and we can still verify that her Petitioner wasn't a 1x.
So that leaves whiteflame and Lunatic, neither of which should have let Kohai fake claim Strengthener.
In Lunatic's case, he may have just been too late to stop the claim, as I've said before; it happened fast after he subbed in. He's marshaled some arguments against this, but they amount to some WIFOM and a few relevant points -- namely that it's a very silly scum claim that he's going to struggle to even confirm. And indeed he watched only himself and roleblocked a dead man. JOAT and Inventor remain an eyebrow-raising combo.
In whiteflame's case, maybe I'm approaching this wrong -- maybe he saw Kohai's demise was inevitable and even advised him to claim Strengthener so he could farm some towncred with a quick hammer. I have to imagine scum!whiteflame cringing when he saw Kohai's "haha I'm scum come in wolf chat Mago" jokes, though.
Will think some more on this.