Paywalled, dnr; 😐

Not good. But not as bad as the headline suggets. It’s about the payment method. And proton offers serveral options:

You can pay for your subscription using Visa, Mastercard, American Express, and PayPal. You can also use Proton gift cards and credits. Once you’ve created your account, you can purchase credits with cash, bank transfers, or Bitcoin.

So buying credits with cash or bitcoin should be the way if you want to stay anonymous. Still it’s a good reminder that you have to control a service if you want it to be save.