If anyone wants to actively fight against the spam coming from signature campaigns just go to their thread and the majority of them have a spreadsheet with the usernames of all the participants, or you can scroll through the thread manually. Then look at their posts, and report any that are spam. (I would recommend signature managers to do this when they are reviewing too)
It's literally a database for spammers. You'll find a lot of the accounts are trying to hide in the spam in the altcoin section. As well as a few accounts just rehashing what someone previously said in a thread. Alternatively, if you see someone with a shitpost, look at their history and report any other shitposts too. The mods will appreciate it and the general browser.