For me its not safe, but you cant do so much, also nowadays the goverment data sometimes its hacked so...... we dont know if already ou documents are in the web.
Generally there is a risk when KYC data is sent to any casino or gambling platform that have no license or comparatively weak. Because those sites can be hacked at any time. If a gambler can choose Trusted site he can send the KYC information. Because if they falsify that information, their site will be destroyed. When a gambler makes a new registration he must observe these things carefully before registration otherwise he may face danger later. Gamblers should not provide KYC data unless they can trust the site.
Actually, choosing a reputable and trusted gambling platform is essential for gamblers. It always happens sites that are licensed and regulated generally follow stringent security protocols. And also sites like these are more likely to be secured properly against hacking attacks. I would say, research the reputation, licensing information, and security practices of a gambling site before you provide any personal information. You know, regulated sites are more likely to adhere to security and data protection standards because these organizations enforce compliance.
In the end, as a sincere gambler you should avoid sharing personal information, including KYC data, with any gambling platform that you feel is unreliable or suspect.