It helps for visibility but you need to provide a swiss phone number to buy. This not only on the train ticket machine but on all BTC ATMs. There is not much point of paying premium if it's KYC.
What nobody realize is that we pay such fees for everything we buy, it's just not clearly stated on screen like this but hidden in the background and priced in from the displayed priced.
10frs toys: 8.8% VAT, 3-6% card/bank processing fee/fixed cost, x% fee for taxes on employee wages...
10frs phone refill at the same vending machine or at the liost: 8.8% VAT, 3-6% card/bank fee, 10-20% for machine operator/shop, ...
Booking.com and co: 20-35% fee + everything else
Uber, Food delivery, event tickets... all have largely more than 9% fee if you account for everything.
That's why we must enforce usage of Bitcoin directly P2P to cut as many middle many and fees. Get paid in bitcoins, pay your goods and services in bitcoins as much as possible. Ask for discount when paying in bitcoins. Sell your bitcoin for cash P2P to allows others to buy bitcoins without middle man and pay cash when you have no bitcoins options.
Don't fall for the trap of Bitcoin/cryptoshitcoin card that will charge you 1-3% fee + charge the shop 3-5% credit cars fee on top that you pay, it's just pushing back the problem, reduce incentive to promote bitcoins and feed the beast of banks and credit cards cartels.