No your missin it lol.
There is a difference between in game roles and official roles, most times its the same, but some times not. The host may change up the official role rules, making it different from the official. And as such the roles we have in game could have different abilities than what is official. My point here, is that Rej was asking for the in game role by asking Luke. This seems scummy because if he just wanted to know what Oracle can do, he could've just googled it and found the official role abilities. But instead he asked Luke about the specifics of the role. Why would Rej, a townie, want to know the specifics of another role other than his own this early on? What does it benefit him? If you can answer this, it would be doing him a favor, cause he couldn't.