Your Polly clears are stupid, something like a normal rolecop would be easily able to identify actions with the conditions when Polly suggested we confirm his role that way- and the town-sided roleblocker had already flipped plus the scum had a part-time roleblocker, so it'd be really easy to assume there wasn't any more. SURE, THE TOWN ONE WAS THIRD PARTY, BUT HE WON WITH TOWN, so from an assumption that his alt condition was supposed to be difficult he was effectively a town hooker who spreads their miller-aids to people with bad immunity systems.
oh wait Rou was ALSO A ROLECOP >_> Muh. I guess Polly could have just been lying out his ass and BBM was going to use the rolecop for the answer if anyone seriously took the bait, which they were probably thinking wasn't super likely? That or they'd want to nk the relevant person hopefully anyway. With half the game being heavily town that'd be pretty doable before everything started going horribly wrong for scum.
Okay I just don't like going out on limbs like these to try to use role shenanigans to clear people, because this doesn't feel like a very safe way to clear someone, assuming all these things. Scum easily could have futz'd themselves into a mistake like BBM did, at some point with the Polly stuff.
Plus I have townreads on most of the other people so PoE. Cough.
Anyway, the scum lost their RB'er and I'm a doctor, Rou's going to live and get his result on Prims. You don't need to worry whether Prims is actually scum or not.