I agree with you. I often choose famous managers to participate in their campaigns. Although not all of their campaigns are successful, the scam rate will be much lower.
That is true, because if you choose the famous manager in the campaigns it means their is possibility that it will be successful. But their are times too that it is a scam, so sad to hear but that is the reality. We don't even know what will happen for the future but we have desire to be optimism of the result.