This is the most important point to that article IMO:
death won’t just be a matter of the child uttering his fiat mortem. The law requires statements by psychologists and doctors confirming the child’s ability to make the decision. The child’s doctors must also inform him about medical options that may ease his suffering and maintain a dialogue about his preferences.
This law does not mean it's a free for all murder fest on children, although some opponents to the law would like to have you think that.
Having the right to end you own life or the life of a family member at their request or at the combined judgement of a doctor and an adult family member is always going to be better than having a law preventing it.
Having the government tell you what you can do with your life is absolutely ridiculous.
"Anarchism is not a romantic fable but the hardheaded realization, based on five thousand years of experience, that we cannot entrust the management of our lives to kings, priests, politicians, generals, and county commissioners."