What really cooks my noodle is how you can write a balance transfer check and deposit it right into your bank account with no interest (for a certain period) and no fees, but then crap like these new crypto purchases and cash advances create a whole list of fees and immediate interest charges. Point is, if they wanted to facilitate business they would do it. My guess is a lot of people were buying when btc was mooning and during coinbase s long transaction time, btc started collapsing and people started disputing the purchases or taking out their money before the transactions went through. That probably left the crest cards and banks left eating a lot of losses.