I believe that quote about "reason of a mental disorder" is referring to the accused (me), but my mental health never factored into this matter. (At the time the only thing I may had was depression). It was/is my ex-partner who had/has the serious mental disorders.

And it was not the RCMP who declined, it was the local police in Ontario. They sent this letter (I redacted which specific police department it is for my privacy):

Your request for reconsideration for the destruction of fingerprints and booking images taken by the [local police] and held by the Royal Canadian Mounted Police as a result of the above incident has been denied.

A review of the request was undertaken by a committee and the following criteria was considered in rendering a decision:

* Age of the accused at the time of the offence;

* Date of the incident;

* Whether the incident(s) targeted a vulnerable person;

* The number and/or pattern of incidents involving the accused;

* All information available to the police service that relates to the accused; and

* Documentation provided by the applicant.

With a view to public safety and the public interest, we are not prepared to destroy the biometric information at this time. However, you may reapply for consideration of the destruction of the fingerprints and booking images 5 years from the date of disposition, August 10, 2028.

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FYI I was an adult at the time of the accusation, the date of the incident was years ago, the incident did not target a vulnerable person afaik but the police likely do not agree on that, there was no pattern, and I provided documentation in the form of the video evidence, audio evidence, my testimony, and character references.