I think you need to relearn how to show connected accounts, because if you only show such a profile link, we will never know how they can be connected.
Even if your accusation is true, I myself am not interested in doing further research, considering that their accounts already have quite a lot of negative feedback, doing research on them will be time-consuming.
If you find something suspicious, to an account that hasn't had any negative feedback that is in the Signature campaign, but you believe something isn't right, then say so. Maybe I can help you.