Old people, or people in immense pain, may not be in full control of their faculties, even if they are not certified so.

My wife’s grandfather had dementia, and my wife’s uncle who was technically their carer, sucked them dry of all their money then blocked medical care coming to them. The grandparents wereegally independent. If he could coerce out an assisted suicide, it would have all happened much more quickly.

This is second hand info, not enough for the police to bother (they were notified) but knowing the characters involved and enough facts, completely believable.

It’s maybe not a show-stopper anec-argument but definitely something to bear in mind.