Just very quickly, decisional capacity is very much based upon the nature of the decision to be made. What we're talking about here is a very significant decision resulting in death, so the decisional capacity that will be required for medical assistance in dying will be very significantly different from the capacity to be treated for a sprained ankle.
I have great confidence in the medical profession's ability and their recognition of that as a concept and the seriousness with which it would take this. I can't imagine any physician being involved in this process unless they were fully satisfied that the young person fully understood the implications of their decision.