There's something we as players like, and that's that withdrawals are immediate, just like deposits. When we deposit at a casino, the casino doesn't hold the deposit, it accepts it, and then we start playing. It's not bad if we demand that the treatment be equivalent, especially when the corresponding KYC is completed.
I said a couple of times in this thread that I also agree with the point of view. Players always like instant withdrawals from a crypto casino. But casinos have some limitations, especially when the team is working. When you give your devs access to your entire website/code, and one of them drains your wallet because it is automatic, you cannot do anything unless your dev is your employee.
Only big brands hire devs who come to the casino office and work there. Most devs work online, and they are anonymous. So the team has to rely on the devs and keep the withdrawal manual for security reasons. There might be other reasons, but I am talking about the possible reasons only, and I don't know if this is the case for Spinly.