Most of the spammers are not in bitcoin signature campaign but either they are in bounty campaign or they are not in any campaign at all. People that are in bitcoin signature campaign or that want to be in bitcoin signature campaign only prefer to rank up and have more merits. So this will not make them want to spam.
As for a spammer not to be spamming again, it is very possible. Some of them can continue to be on this forum and study more about how good posters are posting and learn from them.
It's already 2024 bro, where most bounties aren't worth to participate and bounty hunters choose to quit the forum. Although there are still many users join bounty, but they're only join social medias campaign, they didn't post in this forum except report their work.
Most spammers are in Bitcoin signature campaign, they're either creating long post with just few points, make a post based on above users' ideas/which have been mentioned, or generic posts.