Do I understand this correctly?

OP wanted to use double-spend to play in the casino and if he would lose then the scam is obvious because the deposit would be never confirmed and if he wins?

They push deposit with a higher fee to be accepted fast and try to withdraw ASAP counting that the Bitcasino fraud prevention team would not spot this?

It looks pretty dumb to count on their mistake, knowing that the fraud prevention team is monitoring "double-spend" attempts non-stop.

Or I am missing something?