Earlier quoted context omitted.
It's being proposed in order to maintain quality of life. No one wants to be overcrowded. This is a sane solution: collectively agree on the maximum tolerable population. Then it's down to individual responsibility to obey the norms of one's society. Edit: unless you're Swiss, your opinion is irrelevant. Swiss voters have a right to decide how they want to live. They're not beholden to EU laws; they can make their ow…
If you increased Switzerland’s population density by 50% they’d be in a crowded hellhole like (checks notes) Belgium
If you account for that, the effective density of Switzerland on the usable area is 600–700 people/km².