Most likely, scammers collect all the information about users on this site in order to use it later. Disclosure of your data is fraught with consequences. Are you expecting someone to pay you in Bitcoin? What wallet did you create? Your entire post screams that the scammers clearly want more from you. Why do they need your documents? Every time someone on the network demands personal information from you, it should serve as a red flag, and you should immediately stop contact, as gullible people can be very well manipulated by scammers. Just cut off communication.
People are willing to sacrifice their privacy by submitting the documents also just to earn some free money which is not possible at all.As you are saying that when these scammers demand any such documents from you communication should be ended but we have seen across forum also many cases where they still believe them until the scam happens regretting later on.The data breaches and using your documents by selling them on dark web is not new thing but for people it's still normal as they don't realise how big risks is involved in this.