Why self-administer? Are they admitting a moral wrong doing if the physician administered for them? And what would that wrongdoing be? There is an admission of evil here but no remedy for it. The physician still cooperates in murder, just one step removed. It is only NOT murder because the state arbitrarily decides to define it that way.
If competent, why have to ask three times separated over 15 days? Here is another admission of evil in this law. They appear to be afraid of making a mistake over competency but so what? Why be afraid of the mistake if the life has no meaning? There are now two classes of citizens here, the competent and the incompetent.
It’s probably more to avoid legal crap for the family during and after a very sensitive and personal time.