Every user is entitled to this and what he hinted is not hidden information, we all know that Stake is currently undergoing KYC overhauling with a $250 bonus attached to it as an encouragement and to show how generous they are.
And there's a deadline for the users to comply.
https://casino.online/news/complete-stake-com-kyc-level-2-by-january-2025-to-access-bigger-bonuses/Stake.com KYC Level 2 Becomes Mandatory — Deadline January 2025 for All Users
It was also discuss in the stake community forum.. so it seems like many are eligible for the bonus if they will comply.
https://stakecommunity.com/topic/108697-250-verification-bonus/I haven’t verified my Stake account yet, but when I open it, I see a notification to update. I think I’m part of the directive for Level 2 verification. The only downside? No bonus for me, lol.