The last few days I've been playing Entrenchment solo, and the only big setting that I'm playing with differently lately is to turn off the pirates (i.e. "Pirates Inactive") because I'm sick of the last-second bidding-festivals that wind up blowing all my money only to get attacked anyway.
But besides that point, I noticed in the last game I played, I several times heard the pirate audio cues like "there's no profit in attacking an empire!", and looked at the pirate screen to notice that some of the AI's had been offering up pirate bounties for some reason - even though the pirate attacks were disabled.
Is this a bug, or is there some point in giving money to the pirates if they aren't active?