But precise enough to include that the patient must have been ruled to have capacity to make the decision.
It's a blog post by a not lawyer and a not doctor. She conflates the usage of a single word in one legal context with how a term containing that word within a statute would be interpreted by the courts. The rest of her blog concerns other countries with "similar" laws. If it's not the same, and if it's not interpreted within the same legal machinery, such analysis is essentially irrelevant.
The truth is that a term in legislation adopt a meaning initially with reference to guidance notes, and later supplemented by caselaw. Caselaw elsewhere would only be of assistance where there is some legal harmonisation (e.g. EU law or an international treaty implemented in multiple countries). Possibly reference would also be made if the corresponding legislation and legal framework was so similar as to provide helpful precedent.
Reading an article like this, one should not consider each "might" and "may be" as cumulative. Instead, treat them like probabilities.
On my ride today I might get a puncture. I might be going fast when I get a puncture. I might be on a busy road when I get a puncture. I might fall off it I get a puncture. I might get hit if I fall off. I might die if I fall off.
If there's a 1-5% chance of each, that doesn't add up to a 25% risk of death today for me, it's more like somewhere between 10^-8% to 3x10^-6%. That means even a generous assessment of the risk of death by puncture is about 50:50 after cycling daily for four and a half thousand years.
That is the jist of your argument, Aurora. Hence why the article considers maybe 30-60 deaths over a decades amongst combined populations of about a half a billion.
Some perspective is needed, because there is absolutely no comment whatsoever about risks to other groups, e.g. those for which palliative care is ineffective. Those numbers would be orders of magnitude higher.
Public health policy is a balance of harms, not an exercise in zero harm to anyone.
Aside from all of that, philosophically, I have no issues with someone who is tortured by a condition such as anorexia to the most extreme extent discussed in the article from seeking assisted dying. We can't on the one hand demand respect for mental illness and wring our hands at how its not treated like other illness, then have it the other way when it comes to personal choices like this. In my view.