In general, I believe that people posting only the content from a source and having no further opinion of their own, should also be punished, maybe a warning.
It's punishment enough to make small adjustments to the rules and give the moderators freedom to delete such posts and threads. When they fail to reach their signature quota, they will first complain about it and then look to change their habits if they want to get paid. Since those low-effort posts are mostly made to up the post count, their goal is to get paid and when they don't, you will get the wanted results.