Survivor pisses off scum by helping town.
Lyncher needs cooperation to win, and he'd have to be a master of deception to trick people about who his target is.
Martyr needs the scum to kill him to win.
Brother doesn't know the alignment of his brother.
SK doesn't want the attention.
Jester really doesn't want people to know he's a jester... and could be fakeclaiming one of the other alignments to attract a lynch.
Assassin isn't going to get helped by scum if he helps the town.
Mafia-Ally would get lynched.
Here's how it really works:
Survivor does make the scum mad, but the scum either waste a kill on a non-cop, thereby giving the Town all the information it needs, as well as CONFIRMING WHO HAS WHAT for their inspect results. Therefore, it's better to NOT kill Survivor, since it lets them get to lylo faster.
Lyncher wouldn't reveal his target, but would later be given his choice of lynch. It's a small cost, really. Same situation arises if the scum kill him. They've just confirmed all the inspect results.
Martyr would want to avoid this, as the scum wouldn't want to Nightkill him. That's 1.
Brother has a 1/5 chance that his brother is scum. I'd take the 20% chance to give everyone their alignments. In fact, it's STILL bad for the scum to kill him, since he can still win otherwise.
SK wouldn't, because he'd be killed.
Jester would, since it's still a waste for the Mafia to kill him. It pretty much guarantees the Mafia's loss to kill him.
Mafia-ally wouldn't give town extra information.
Assassin would do it, as it's the same dilemma as Jester.