Sure. Why could I only be joking or mafia? That seems a bit restrictive.
That wasn't an either or statement, but I considered both alternatives to be varying degrees of bad. Sure you might be a Townie joking about it, which is a bit bad cause encouraging behavior that limits players from gathering information is objectively Anti Town in nature. Scum wants to control the Info.
Option 2: You might be Mafia saying that in the hopes of town doing that, and is using the "just a joke" thing as a defense
Option 3 (least likely): You are town and genuinely believe other Townies shouldn't read OP. This is the least likely cause I don't think you're a terrible player.
So yeah by process of elimination, You're either a townie joking, Or Mafia using it as a strategy.