These extracts from the HoC debate you referenced above summarise the issues involved here
"there will be some people who have six months of their life to go who will then feel, “Ought I to do this? Is this something that I now should do?” That brings into play a whole set of considerations—“Is it better for my family? Is it financially better for my family?”—in ways that, at the moment, are out of scope. Rather than simply focusing on the individual suffering, which we all recognise is acute, we must broaden the debate to the impact that the legislation will have on society as a whole."
The assessments have to determine whether the patient is terminally ill, whether they have mental capacity to make the decision, and then whether they have been coerced or pressured into the decision. In many ways the whole issue turns on the question of whether someone is terminally ill. I am afraid that it is a term of great elasticity, almost to the point of meaninglessness. It is well known that it is impossible for doctors to predict with any accuracy that somebody will die within six months. It is a purely subjective judgment, made in this case by a doctor whose job will be approving assisted deaths. They simply have to determine not whether it is reasonably certain that death will occur, but that it can be reasonably expected—in other words, that it is possible.
The thrust of the Bill, as I understand it, is to ease suffering and pain in a patient who has a diagnosis and will die of the condition that has been diagnosed. But that right could only be exercised within a six-month period, and the pain and discomfort could last a lot longer than that. Has my hon. Friend heard—because I have not—what the importance of six months is? Why not eight, 10 or 12? What would stop people challenging it on the grounds that the dam has been breached, the six months is entirely arbitrary and it could, and indeed should, be extended by negative resolution in a statutory instrument?
My hon. Friend makes the right point, and I am afraid to say that is absolutely the case. The six-month cut-off is completely arbitrary and impossible to determine. It is a line in the sand, and of course it could be challenged, as so much of the Bill could be challenged, on human rights grounds. Every one of the safeguards that has been introduced by the hon. Member for Spen Valley would in fact be a barrier and a discrimination against the new human right that has been awarded to one group but should of course be awarded to all—if the point is conceded in this
Earlier this week, colleagues and I met two eminent doctors who were former presidents of the Association for Palliative Medicine, and they raised serious concerns about the Bill, including that the doctor or medical practitioner who makes the assessment need never have met the person they are assessing, or been involved in their care at all.
The hon. Lady makes a very important point. I will not get into the question of public opinion and the polling, because it is so contested, but there is clear evidence that the doctors who work with the dying—the palliative care professionals—are opposed to a change in the law by a great majority. They see the damage that it would do to the palliative care profession and services, and they see the danger for vulnerable patients.
The whole question of the six-month cut-off is very important. I acknowledge all the points that have been made, but there is another problem with the definition of terminal illness. Almost anybody with a serious illness or disability could fit the definition. I recognise that these are not the cases that the hon. Member for Spen Valley has in mind—of course they are not—but that is the problem with the Bill. All that someone needs to do to qualify for an assisted death—for the definition of terminal illness—is refuse treatment, such as insulin if the person is diabetic. In the case of eating disorders, a topic on which I have worked with the hon. Member for Bath (Wera Hobhouse), a person just needs to refuse food. The evidence from jurisdictions around the world, and our own jurisprudence, shows that that would be enough to qualify someone for an assisted death.