Is this “all’s fair” stance an actual accepted thing? If so, what are the limits on it, can I assassinate someone? Start an actual war to cause a player to resign? Blow up their planet? Clearly there’s a tacit assumption of some boundary around the game.
It's not something you should do with random people, but we've all been best friends for over 10 years now, we usually know each others' boundaries. And the tv show "The League" was something we all had in mind as inspiration when starting this.
I hope it isn't a real thing! I was being facetious.