but the site accept other coins aside from bitcoins ? if yes , thats great because they need it for those who dont like to use btc because of btc known problems. its not that they avoid btc because its slow but they avoid btc because of the crazy fees too when sending and withdrawing . slow speed can be fix by paying more but why would you do that ? eth has a high fees but that wont happen without a reason. they accelerate the speed atleast