Sort of correct. There was a recent attack that provisioned a bunch of high bandwidth servers to establish their 'rankings' and then launched a DDOS against oth

Sort of correct. There was a recent attack that provisioned a bunch of high bandwidth servers to establish their 'rankings' and then launched a DDOS against other Entry Guards (effectively knocking them off-line) to increase the chances that their range of high bandwidth servers were picked by both parties for the Tor connection. (Citation available but the Tor project blog has the details for those curious).