I think maybe they should put rewards in ltc or any other currency with lower transaction fees. Because 0.001 it's way too much for a fee considering the winning amount.
i think you are right because if we compare it with other crypto casino the fees for bitcoin withdrawal is pretty high.
but i try to play the rewards from this and i able to make it 3x which is 0.003
BTC and at the moment i just withdraw my winning.
edit: over 14 hours needed for my withdrawal to arrived awesome