10% transfer fees? Man, I don't think casinos who charged their clients that high will sustain with the level of competition in this industry.
2. Bitcoin sportsbooks allow players to keep their privacy
Not every Bitcoin casino offers complete anonymity because there are already several casinos that requires KYC verifications, especially with the players who place huge amount of bets and withdraws a lot in a massive sum as well.
3. Withdrawing winnings in bitcoin is usually faster than withdrawing fiat currency
Not sure again with this one. Most of the crypto casinos says withdrawal is instant, but literally it's not, because of the queue your withdrawal time depends on how many people is withdrawing at the same time. Plus, it also needs to go through block confirmations.
4. Bitcoin sportsbooks provide fairer odds
Do we have a reference for this claim? Because AFAIK, odds from all sports bookies are almost the same, otherwise there will be an influx of gamblers in a casino where odds are "fairer " that also has high probability of profit.