Politco makes it sound much bigger than it actually is. Only two things are now secured in the constitution:

- The franc is the national currency - The swiss national bank is responsible for the supply of cash.

This doesn't have any effect in practice, since this is straight up copy and paste from the law about currency. This change only means that a change requires a mandatory referendum rather than having to launch a referendum.

It does nothing about acceptance of cash, afaik that initiative failed to reach the neccesary support to be voted on.