Ok so as it stands, my waifu is right in their approach with Ex.
While it is a fact KillJoy tried to snipe Ex, that doesn't exclusively mean that Ex is clear cut town. I think it is likely he is town, but I could be wrong based solely on KillJoy's action. Then, as HHH already detailed, a lot of what KJ said yesterday is classic WIFOM. Minus any smooth-brained moves, KJ should've known bonus votes don't count towards majority since his own role explicitly said so (though I imagine there is a line of thought where other bonus votes that were not his might count, but that could've been addressed by questions to the mod to get an indication -- and even then putting all your eggs in one basket only for them to crack when trying to snipe Ex is massively risky, but eh).
Suffice it to say, KJ's actions don't concretely indicate Ex's alignment. I'll only agree to a slightly better possibility of Ex being town, but even then that is questionable since KJ could've put on an act when trying to snipe Ex.
Now, wrt to Ex's own actions/words, he's indicated an intense desire to keep the Thing on himself. Numbers makes another solid point in that, as town, Ex can still win even if he's killed. Now I'm going to harken to something we've seen, but haven't touched on: KJ flipping mafia.
KJ was the thing, or so it seems based on what has been discussed, and yet despite being lynched came up as mafia. We have no direct confirmation, one way or another, that he truly was the thing or that it truly exists outside of OG's role implying as such and, now, Ex claiming he has it and detailing what it is (even though his details more or less fall in line with the descriptors from OG's role). As such, there is a possibility that Ex could be maf hiding behind the thing and exclaiming it is no threat (despite OG's role yet again).
Now, I love fear mongering as next as the next mogul, but all we have is Ex's word to go off of and a game state that is still active. If Ex is being honest, then having the passive on him and outing it only for it to become public knowledge paints a target on Ex. If someone else other than Ex is mafia and wants to win via the survivor win con offered by being The Thing, then we have no reason to save Ex as Ex will still win, as town, and the mafia can claim that sweet survivor con to get off a sinking ship. This makes perfect sense.
What doesn't make sense is Ex's vehement desire to win via staying alive which doesn't jive at all with the situation. He, per his own words, knew everything about the Thing due to having it, yet outed it. Then he wants to utilize it as a shield to avoid issue even though it'll help expedite the game via having the mafia end their careers and go survivor. Ex would still win as town despite dying, but that's assuming he's being honest. If he's not being honest, and is truly mafia despite having the thing (assuming he's not lying), then why do we still have an active game state that hasn't just come to an end?
Riddles abound. Execute Ex FOR GREAT JUSTICE!!!!