I think this is a good point, though I think BM saw that Zara was hinting at being BM and took that opportunity to show otherwise, not to necessarily to save Playa.
But I think there could be scum in the voters against him, as they would want to distance themselves as much as possible from playa if he was scum, or would be down to lead into a mislynch. I'm also not liking NW constantly sussing playa because of meta, that's useful in d1 but not right now.