Germany isn't only in the restricted countries list at Stake, but also in most other licensed casino. You will rarely find a perfect crypto casino where players from Germany are allowed to play anonymously. There are a lot of players at Stake who is a resident of Germany. Only the old players of Germany can still play at Stake as Germany wasn't in the restricted countries list in the past. Your friend is having this benefit. It is true that Stake will loss a decent number of users for this mandatory verification rule. Still, it isn’t going to create a significant impact there.