Means nothing to me. I mean, I get it, but it's not why I bitcoin.
I don't know if that's really what would convert normies. I mean, how many of us understand how a card really works at the store? We can guess parts, but most people don't need to know "what's going on under the hood" to know that it's easier to use a card linked to our bank account than to get cash for each transaction.
