What I mean is that they could do things on their business side, off-chain, completely independent from the "protocol" or smart contracts. If they already accept use a "traditional" payment processor to accept credit cards, why could't they add zksync as an option for payment on Tardigrade?
It's really not hard - I've done a PoC when I was working on https://hub20.io - but it doesn't help with their "tokenonomics", so they just ignore it.
