I appreciate your effort to bridge a gulf here around an understanding of what the Supreme Court of Canada told us in Carter was their intention with “grievous and irremediable”. However, it's very clear that the word “incurable” goes against what the court decided.
For instance, it was not part of the decision in Carter, but in the discussion of extending the time in January, Madame Justice Karakatsanis was very clear in saying that in Carter they rejected “terminally ill”. I don't know what the definition of incurable is or if it's very different from terminally ill, which the court has very clearly said they rejected.