However, I later spoke to a friend who underwent the same KYC procedure and learned that his verification process took less than a day, enabling him to withdraw his funds instantly.
I believe the resurgence of this topic is due to the recent issue about Stake asking for the same requirements. Your friend already told you that this verification procedure can only take less than a day which means the problem is on your side and nto Stake themselves. You are providing incomplete and low quality image that makes verification failed. Honestly, I will trust Stake on this matter because they process withdrawal amount that is greater on your requested balance. Singling you out will not gonna benefit them.
Also your loss is also your problem because you didn’t control yourself that time. All I can see on your issue is that you are upset that time that's why you are attributing all your mistakes to Stake because they hold your funds for KYC verification.