So, those of you who advocate player knowledge = metagaming/cheating, you tend to see experienced players announce forthcomingly to the table that they *do* know trolls are vulnerable to fire, but that they will not be acting on it? How does this impact the one newbie player who *doesn't* know and now has the surprise ruined by the non-liar experienced players?No, it's not. There's a difference between pretending to be someone you're not within the game and misrepresenting yourself as a player to the other players. However you pretend in the game, that's not lying.
I mean, you just said that the players don't lie to each other about knowing the secret. So they must let everyone else at the table know they know. And that, like dutiful non-cheating metagamer, they promise they will not act on that unfair knowledge. Right?