I cannot pinpoint a particular manager with that accusation so far. I have been joining several campaigns in the past and most of them I can recall are failures. Bounty managers are also failures as well but I cannot accuse them of conniving with the project. But it is really possible. It can be made by scammers. In fact, that is the easier part. The hardest part is the creation of whitepapers, a reliable website, and so on to look like a good project. The promotion later on is easier.