@Sabreiib has stated publicly he is a large B&C shareholder. It appears he has been using his own shares to vote up his reputation. While I can understand the initial intuitive reaction that this is unfair, it works very well actually. A valid perspective on the cause of the recent multisig failures in Nu may be that the signers didn’t have a significant stake. To be a signer in B&C, you either need to be a large shareholder or enjoy the favor of a large voting block. That is how it should be. I have high confidence in @Sabreiib as a reputed signer precisely because he is a large shareholder. It is fine with me if every vote he receives comes from himself, although that is unlikely to be the case. Being able to vote yourself reputation is one of the many benefits of share ownership.
Also, the system permits down voting. I expect shareholders who vote themselves reputation without demonstrating credible intent to sign properly will be down voted by other shareholders.
Reputed signers will soon be earning their pay as they test an incomplete B&C Exchange.