The team of the casino may not be involved in such activity but there are some greedy staff in the company that can do that. We can give benefit of doubts to some reputable platform but you don't know so well what is going on behind the scene.
Staff members are part of team. But, based of the context of your reply, by "team" I suppose you are referring to the casino owners, right?
Hiring staff members is the owners' responsibility. So, if something goes wrong, the owners still bear part of the responsibility.
Besides, there should be some kind of restrictions on who can access sensitive data such as users' private information.
Unfortunately, not all casinos take their users' privacy seriously. I once witne3a case where the live chat agent asked the customer to upload his documents via the chat window!
Yes, by staff, I mean those that the casino hires to run some activities in the casino, such as "customer support." If anything goes wrong, it's definitely the responsibility of the casino owner and his core team.
Regarding the live chat agent asking the customer to upload their information, I have not experienced it at a casino, but I had that same experience with a CEX. After several failed KYCs, I contacted the live chat agent and was asked to upload my details to them.