They would still call it fake even if he did it on their pc with his bank card. Hell, he could take them to where ever the place is that handles deposits watch him hand over 100k and somehow that would be set up.
Gets me how they think a legit casino would allow half the crap the accuse him of nor why they would need too, Like poker stars they accuse it of being rigged yet the site makes 1.4 billion annually so why would they rig it? ..