Will you go ahead and provide them all they require from you for account verification, so they can process your withdrawal request, or will you willingly forfeit such amount of money back to the casino on the account that your private information is more expensive than that amount of money you have own from them?
This the tricky part about gambling privacy nowadays since some new casino risk their reputation just to dodge huge payout using their ToS. It’s nonsense to provide KYC on a relatively new casino if you won huge amount while they halt withdrawal using KYC requirements.
That’s why playing only with trusted casino for a long time is a must in online gambling so that when a big opportunity like this come then we can safely claim our rewards since we have forum.
That would be better. If there's a casino that you truly trusted, better to stick with it. If trying new casino is out of your option, and if you are the type of gambler who wants to try different casinos, reach out to the people you know and have them suggest the casino they tried before.