"Unkillable" in this instance means night kill. You can play around bulletproof scum just fine. Scum can't really play around invincible townies.
But hey, I got a different idea. Let's take your completely unbiased assessment at face value that this all well and checks out
If I am required to assume that the host is either giving a giant middle finger to the scum, might as well throw away any assumptions involving the host making fair and equitable decisions in terms of game solving. Agreed?
Not agreed, because your premise is wholly flawed. Prof having an ability that lets him change alignment from Day 5, while swingy, is not "giving scum the giant middle finger". What has happened here, is that Prof used that ability to become a Guardian Angel, and used it on me. Surmised thus, it's a Townie using his ability to benefit another townie. What you keep missing here, is that this whole Guardian Angel thing is the compromise for Scum - otherwise, Prof would know who scum is (or at least some of them) due to Fuji's mistake and then win the game for town through it. That doesn't mean you need to feed into the delusion you love to espouse about the game being rigged for certain players the host favours, it means that mistakes happen and this was determined to be the best way to mitigate their effect.
You're doing this a lot. You're loading your positions based on conspiracies you feed to yourself, and then you're asking me to respond as if your conspiracies are proven truth. And it's even sillier, because you're doing this against a *presumption* that Prof can protect me against super kills. You don't have the information to hand, so it's silly for you to act like you have a fully-informed position on this instead of accepting that your point of view is, perhaps, less valuable than people who are better at speculating on this sort of thing.