Are you saying that there was a case in which a police officer was held to be guilty of discrimination because the officer used the wrong pronoun?
No, I did not say or imply that. Using "the wrong pronoun" was not the basis of the discrimination finding by the British Columbia HR Tribunal Member in
Dawson.
What I did say is that your "conclusion" (that "if someone wants to be called 'xer' and I call that person 'her' I could well be committing 'gender-based harrassment' by "reinforcing traditional heterosexual gender norms") is contrary to the
Dawson holding where it constituted discriminatory treatment for the police officer to refer to Dawson as "male" and by a male name
despite knowing that she is a transgender woman (for whom it would be appropriate and hardly an expression of hostility or bullying to refer to as a female).
BTW, note that the OHRC page you linked to was last updated in 2013, whereas the BCHR ruliing in
Dawson was 2015.