Professor David Albert Jones:

It is not only countries where it is illegal that make this distinction. In countries where euthanasia or assisted dying of some kind is legal, they also make this distinction. There are reporting structures, which are for assisted dying, but they are not for this. They still make this distinction. The distinction between palliative care and assisted dying is one that is upheld by all jurisdictions, in both those where it is legal, and those where it is illegal.

On a medical point, it is not the case that giving morphine inevitably shortens life. The evidence base for this is very weak. Generally, pain shortens one's life, and appropriately-given pain relief does not shorten one's life. Sometimes it lengthens it, sometimes it shortens it a bit, but there is no consistency.