They actually get one better. Whereas a credit card takes 1-3%, gives you 1-2%, makes $$ on various partnerships for redemption, sell your data for additional $$, and potentially charges you yearly, monthly, or interest fees. The CC ALSO extends you 1 month liquidity for free.

These guys directly debit you, so they have to float nothing, they have no fee on the ACH, and they keep the 1-3% merchant fee. That said... avoiding some of those earlier issues of fees and data selling, this seems kinda cool.