No, I wouldn't have been worried if it was an accredited auditor and they respected the public sector audit board's rules and regulations. I think that's where you have to come back to.
I had this curiosity—I will now disclose something I shouldn't—but the former governor of the bank I mentioned was Gordon Thiessen, and he was also the chair of the public sector audit board, so the auditor was subject to him as well as him ensuring the auditor was doing their job.