Just a proposal..
To avoid so much no needed posts. Maybe it is worth to control signature campaigns?
Most of bounties require about 10-15 posts a week, not really understand why so much is needed.
If this number will be reduced to, for example, 5. It will reduce number of not needed posts at least 2 times!
It is true that the signature campaign demands to make a lot of posts, so that the hunters do not care about the quality of the posts, the important thing is they get the stake from the bounty. However, on the other hand that is actually a waste not from the signature campaign posting, but from posting social media reports, and it is not useful in my opinion.