I think they were referring to the little card animation on the side, that shows a card with Visa debit at some point. (Note sure if that also answers backend issuer. There's also one with Mastercard in the animation.)
Mostly, as a user, the main thing that I'm looking at is interchange revenue sharing (the main thing that makes a difference). This can vary for personal and business cards and can be a non-trivial revenue source. If this is not competitive, having the well-known Stripe integration convenience doesn't go that far. I'd rather suck it up and work with an old-school CC vendor if this means the company gets a better interchange rev-share.