Maybe it was just family physically in the room? You could monitor the air composition with a video feed from elsewhere, even just a room over.
EDIT: Ok just read through the article:
“the death took place in the open air under a canopy of trees in a private forest retreat near the German border with the association’s co-president, Dr. Florian Willet, the sole person present.”
So he wasn’t present or nearby, but someone else from the company was.
Also this bit sticks out to me (emphasis mine):
“On displaying cogency and an understanding of the stakes, it becomes possible push the button to activate the process, which cannot then be aborted.”
I wonder if this is a legal sticking point? If someone presses it and immediately has second thoughts, shouldn’t they have the freedom to open it and cancel the process?
They’re too busy for international terrorism now they’re running the country. They only have time for domestic.