Switzerland is NOT the only country where the Greens are losing appeal. They have lost even in Germany. See here:
https://www.reuters.com/world/europe/germanys-greens-lose-appeal-voters-fear-cost-policies-2023-05-16/#:~:text=Support%20for%20the%20Greens%20slumped,23%2D24%25%20last%20year.
They’ve also suffered loses in Luxembourg:
https://www.voanews.com/amp/luxembourg-s-coalition-under-bettel-collapses-due-to-green-losses-in-tight-elections-/7302608.html
When you’ve lost Luxembourg.....