I partially agree with you regarding the KYC procedure we have to undergo even when using bitcoin and other crypto related gambling sites and even i hate providing the details if i am not wagging huge amounts of money, on the other side of things, a sport book has to protect their business too, there are many stolen coins in the market and they do not want these stolen coins to pass through any sports book and be on the blind side of things and get into legal trouble and that is the main reason mostly every one started implementing these procedures.

PS: I was also furious when they implemented KYC and these information was shared by gambling sites and that is the day i stopped wagging huge amounts, the choice is yours whether to comply or to reject them  .