It seems like lots of people think you can just go to your doctor and be prescribed a cocktail of death because you feel down today. That's not what assisted death programs are like, at all.
There's waiting periods, evaluations by independent doctors and psychiatrists, interviews, etc. to determine your capacity and understanding of the decision. Someone who is not of sound mind is not getting approval for assisted death.
Anyone sufficiently determined enough is going to find a way to die, regardless of what laws or programs are there. These programs don't change that, and they aren't meant to.