It mostly causes temp babe on participants who spam and bump. If there is no clear evidence of bump service, there will be no nuke punishment. I also remember nuke is only for newbies (someone mentioned it but I am not sure because I have never read a rule about nuke.).
According to a post by Halab, only newbies who have low activity can be nuked.
Below is the post made by Halab.
Global mods and mods can nuke a newbie, but this newbie has to have a low activity (25-35, I don't have the exact number in mind).
Report main thread wouldn't work I there is no enough evidence against OP that they hired bumping service. I have remember similar case and I had reported one by one users who are bumping thread with spammy reply. Their post had deleted without any punishments. I think moderators have some strategy to nuke or ban bumping spammer. They wouldn't ban just for single spam reply. So only solution is report one by one if you don't have sufficient evidence about bought bumping services.
That won't solve the problem even if I report all posts one by one. Even if they are banned, they will create a new one. If they ban for ban evasion, they will create another one again and again.
Generally you are right. As long as there is no strong proof, there is no solution. Moderators cannot lock a topic based on something that is not proven.
Yeah, from what I know, topics are not locked or nuked for that. In order for topics to get deleted, you would need some hard proof, like screenshot or link of giveaway that is offering reward for posting in threads, or something similar to that.
That's usually impossible.
Everyone check those ANN threads understand that there are being bumped by a third party or their own accounts. But they always do this off-forum and they know that no one can prove they have hired a bumping service.
As you said, the only solution is to report and report.
So, my conclusion is that we can do nothing against them. We can only report their posts so they get deleted. They will continue to post until they find it useless.