“A doctor killing a patient is analogous to a pilot deliberately crashing a plane.”
One just needs the terminal diagnosis — sometimes mistaken — to qualify for the lethal pills.
This is not a slippery slope. This is an ice cliff.
There will be much more to say about the utilitarian drift of medicine and the increasing loss of patient autonomy.
It is homicide: no different in outcome — i.e., killing — from if the doctor shot the patient in the head.