people who have been the victim of blockchain.info's incredible incompetence.
Are you sure this is
incredible incompetence? The transactions are no reusing the same R values but there are an (unknown) patterm instead. That cannot be incompetence nor accident, it has to be programmed as it is in bc.i by developers (very talented developers indeed).
Very good finding @bcearl, that paper describes what I think could happend (because of incompetence or not) and the conclusion is hard to swallow.