It doesn’t matter that they can’t get past 3D-S, because the whole point of what they’re doing is checking what security features are enabled for a card, and whether their address and other validation data will pass. The fact that the scammers are testing so many cards that fail gets you banned from those payments providers, whether or not any payments go through. And this is ignoring all the attackers using bots for other purposes such as taking control of the website to obtain user or client data.