How would that help? Then MasterCard would drop them directly.

Well in this case MasterCard is claiming it wasn't them, but their intermediary.

Because in this case it wasn't them, but their intermediary. However, in another case, where there was no intermediary, it would be them, not their intermediary.

https://www.lesswrong.com/posts/nYJaDnGNQGiaCBSB5/accountabi...

Sure but also in this case MasterCard are clearly full of shit.