I am 99.9% sure that the Poyser slot is a villager. I am one of the best Poyser readers on this site, and I have a far more nuanced understanding of how he approaches games as town and mafia than most players here.
Poyser is polarized - his modus operandi as a wolf is to freeze and not post, and then hope to skate by on the idea that 'he'd actually post if he was wolf'. His reaction to people posting was the exact opposite of this. When other people started posting, Alexa did not freeze up - he focused on posting, and his post count alone is why he's a villager.