On that note, it's better to know that you needed to undergo KYC before you can use the service of the house. It's up to you if you wanted to proceed and submit your KYC.
To those who trusting the house, they will not worry about anything unless there's something that suspicious
or something that went wrong, which they can also have the chance to justify and claim their sides.
You must read FAQs and best read Terms of service to understand what requirements are and what risks you can have before you open account and use products from a platform. It is good for safety and when you do this, it does not mean you intend to break that platform rules, to cheat their system or anything. It is for your safety and avoid rule violations because you don't know about their terms.
KYC, you can do it but after you do it, your documents are no longer in your personal protection. It will be co-owned by you, that platform and maybe a third-party company that provides KYC procedure for that platform. Risk will increase to two fold or three fold with KYC.
You can trust them that they won't let their systems hacked and lose your documents but who knows the future?