See, this article made the hairs on the back of my neck stand on end; I don't believe this is aimed at legitimate users of the service, but aimed at people who are told to go and buy one of these cards for someone else.

So if you're paranoid, would you fund your account through a card that was bought on Amazon by a family/friend? Instead of linking back to you, it links back to someone close to you, who probably has no privacy/security skills and bought it by asking their Echo Speaker.

If you're that paranoid, this product isn't for you. You're buying time with monero you mined personally, and for a 10% discount that Mullvad offers.

And realistically, if you're that paranoid, you're not trusting VPNs at all. You're using Tor.