It's unfortunate that some campaigns don't care whether their members have negative rating or not, otherwise the people from DT could do something about this as well. Quickly skimming through the last two pages: I've found zero posts that are worth reading.
In this case, may I ask why he wasn't banned? I understand that banning a user isn't as simple as it sounds however, in such an extreme case of breaking the
first rule of the forum, I can't think that a decision by a global mod would take very long.
I would be surprised if Namworld did anything. This type of cheap spam is probably the only thing keeping a dead site like Coinroll alive.
In some sense he (Namworld) isn't really obliged to kick him out from the signature campaign but as you said 'I would be surprised if Namworld did anything'.
IIRC Namworld doesn't particularly care about the signature campaign. He has previously
delayed payments to all of his users, and allows a large amount of spammers to participate in the campaign with little to no action.
I really wish there were some sort of action to be taken against campaigns (and managers) like this. They do nothing but exploit and degrade the forum for their own gain.