I don't recall Flaaayin full saccing people.

There's plenty of IC justifications for doing it. A Maran not wanting to leave their enemy with the means to do evil. A villager not wanting a mage to be able to spread magic, etc. Most times that we don't full loot someone we're basically making an ooc decision not to grief the other player for the good of the game. Assholes like Shaapa make a similar ooc decision but with the opposite intent. To them forcing people to rage delete/stop playing is some sort of victory.

All you can really do is fight fire with fire.