Interesting, thank you all for your input. Yeah a KYC requirement only for free bonuses would/could solve the issue of scammers abusing the bonuses. Since otherwise we do not use the KYC in any way.
I would strongly advise against implementing any KYC requirements.
I'd rather have some more restrictions on the free bonuses rather than having to verify.
Make it accessible to everyone, even if it means that people get less in perks. I think that upholding the very principles of anonymity will give you a lot of fans, especially when it comes to crypto and Web3.0 based casinos that are trying to decentralized the marketplace.