Is it unreasonable for you to imagine any of the following scenarios?
* A person believes that choosing to die is different than having that forced upon you
* A person disapproves of assisted suicide and capital punishment?
* A person approves of assisted suicide and capital punishment?
* The process is quite different for criminals vs voluntary medical participants?
etc etc?
Seems to me you're twisting things pretty hard to find a false equivalence.
I'm not convinced that the process is that different, medically.
Then perhaps you could accept one of the others as true or think of others?
But it demonstrably is. Unless you think medicine is just injecting stuff?
How the health professional accompanies the subject is a major aspect of medicine. So some uncaring prison personnel carrying out an execution vs a caring health professional, a terrifying process vs acceptance/calm/accompanying is wildly different, re: "the medical process".
A careful surgical procedure on a toenail is wildly different to someone torturing you by taking your toenail.