@Shadow I know I'm not your real dad etc. but I don't think at this point there's any value in arguing with Cerbrus. I wouldn't call him a troll, because he's different, but "don't feed" is still a good general advice. You will never convince him of anything, but arguing with him will give him ammo to keep going.
since I might have convinced Yvette to ignore him, it's best if we don't take the bait either