bin attacks and card attacks plague many different payment providers, first-hand experience. I'm not aware of much that can be done about this at the payment provider, they also suffer.
Saying they suffer is a bit much. At best they get to collect their fee if there never ends up being a chargeback. If there is a chargeback they don't have to pay the chargeback fee. Sounds like it is an overall win for them to let these slide through.
nope, they get a lot of crap from customers and reputation damage. It's a p0 incident in places where I worked (not stripe, but i can't imagine why they alone would be glad to repel customers for a couple bucks), and everyone absolutely hates it.