It is on you as the user if you decide to join bounty campaigns that are somewhat sketchy, that means you have failed to do your own research and you're prolly just after making profits from the campaign, thus if you get scammed from it, it's basically your fault, the forum doesn't moderate scam, but the forum warns users about such campaigns and bounties, but if you decide otherwise, then it's not the forum to blame, but yourself.
The thing is, whether you're of a high or low rank on the forum, you're allowed to use more than one account on the forum, but without breaking the rules, like joining a signature campaign with more than one of your accounts. You can also send merits to other users, but not to any of your alt accounts.