No, I haven't seen it in my professional practice, and nothing in anything I have heard in the various forums suggests that medical assistance in dying has been requested for lack of proper treatment. Furthermore, palliative care statistics show that the vast majority of people who have requested medical assistance in dying have previously had access to palliative care. If we want to extend that option to others, we only need to ensure that remains the case.
Evidence of meeting #22 for Medical Assistance in Dying in the 44th Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was request.
A video is available from Parliament.