Have you been paid for the services? If so, then you also represent the team and are a member of it. And in case of non-payment to the bounty hunters, you support the team of a project that is fraudulent, thereby you support this scam.
Accordingly, all your negative tags are valid.
Being hired by some project to do bounty/signature campaign doesn't automatically make you a part of the team. They are just hired to do the job and that's about it, same as we are hired to wear the signature. As simple as that.
What it counts is how you behave after it turns out to be a scam, imho. But its also true that huge majority of bounty managers don't do proper due diligence which usual ends up like this. Rare are those that care enough to go that far to even contact someone else and ask for 2nd opinion about some project.