Both cases concerned people who requested euthansia, and repeatedly so.
Both cases were borderline and raised concerns.
Both cases were reviewed.
It is imposssible to have any such system in the real world that does not have concerning edge cases.
It is a system that many people want for both themselves and for their relatives in cases that are clearcut.
The problematic reality about people with mental issues and disabilities is that they are also autonomous people who have opinions, think for themselves, and sometimes decide that their own circumstances are no longer tenable following years, decades even, of struggling through.
See eg: The Last Leg from the UK.
It's not desirable to have a system that kills people that don't want to die and wouldn't choose death if they had better options.
What are the housing options for people with chronic mental issues (eg: the extreme examples of schizophrenia, bipolar disorders, etc) that have no support and have exhausted friends and relatives?