Similar argument only more so for the Eliezer & Alicorn situations -- your second footnote confirms that it would be a mistake to trust what people have said on LW as applying in-game.

In my case, I could be trusted in-game if, before the game began, I promised to be trustworthy, or if some of the people I was playing with expressly did not waive their rights to honesty. In-game, if someone suddenly announced that they wanted to maintain that right for themselves, I would respect it, but I might do so by leaving the game entirely.

Since I expect I would detest the game, though, I have no intention of playing it (which means I have no reason to lie here).