I mean the specific allegation about partner equity, you're using wifom logic to explain why a team mate should bus you here but you don't actually refute the accusation that Poison is your partner and provide an explanation for his inconsistent actions.
The fact that he shaded you heavily but voted for his "town lean" SK, after asking for a valid reason from townies to switch his wagon points strongly to him having incentive not to lynch you. And calling you scum, from his standpoint, allows him to have his cake and eat it too by distancing. Who cares about what *you* would have liked your partners to do, they have their own agency.
You want me to come up with thought processes Poison went through that doesn't mean I'm scum with her? Um, gee, Ultra, I dunno:
1 - Poison feels Soul is a bigger threat to her than I am in the game
2 - Poison feels that, if Soul flips Town, I'm badly implicated, but if I am lynched and flip Town, Soul isn't as badly implicated, and thus harder to mislynch after Day 1
3 - Poison strongly felt Soul was Town, but thought I could be Indie, and wanted to keep me around in case I can serve as a swing vote
4 - Poison thought I was a lyncher, and opted to remove both Soul and me from the game in one cycle.
As for your last point, you're reaching. You know that, if scum, I'm almost certainly leading the scum team, and they're almost certainly following me. If I didn't think they'd listen to me, I'd bus them in a heartbeat.