But where revealing information is prohibited, a player can emphasize something, and this will give them away to other players. No one forbade them from mumbling with their mouth closed.
But a feint doesn't reveal all the cards because there is always more than one interpretation (there is room to maneuver). Revealing information is precise information.
And an artificial feint is a kind of countermeasure from the mafia. They need to circumvent their role. It's a natural thing.
Added 1 minute ago
Orandor, this is an option with flexible rules. "A player reveals themselves with a role that isn't theirs and doesn't get killed, which means it's the mafia." This is what it refers to.
нас все равно расстреляют,
если мы проиграем эту войну.