Maybe its time for the bounty managers to level up their rules on participants, because you cant expect something much from a user who has been always running after bounties and shillings without having any merit in the last 150 days, or maybe some of these their campaigns should start accepting only members from full member upwards, most of these newbies accounts were just only created for these purpose.
I don't see a link between these shilling accounts and posts with bounty or signature campaigns, you probably didn't understand the context of all this because it's not about users spamming for post counts and signature earnings but it's about new accounts being created and topics started in large quantities to promote a certain project filling a specific board or section, in this case, Altcoin Discussion, with spam.