Give players free premium currency, and they will learn how to farm it. Helldivers 2 is set up like lots of other service games, with cosmetics and warbonds purchasable with premium Super Credits, but it's unique in how easy it is to get its premium bucks for free. You'll find Super Credits just lying around in underground bunkers or supply pods out in the field in 10 credit chunks.
If you play a lot, those chunks naturally add up over time, but some players are utilizing an exploit with...