The signature campaign will have no impact if the platform is fraudulent, such as Kawbet and 1xbet.
Kawbet have already closed their campaign after raising proper accusation against their platform. In that situation kawbet campaign manager confessed that he wasn’t notify about kawbet connection with 1xbet. Before taking the management work of any signature campaign every manager should know detail about that platform and their legality. If any manager starts to manage the campaign after knowing that existing platform is not fair with users or have previous scam records then its nothing but encouraging them to continue their scam game.
In the meantime manager will lose his reputation too. So i don't think that any well reputated manager will love to manage any fraudulent platforms signature campaign.